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A Web-Based Interactive Module to Teach Acid–Base Principles of Drug Action Maria A. Hernandez and Jolanta Czerwinska
Describes interactive compressed video teleconferencing as the distance learning format for an entry-level doctor of pharmacy program.
Hernandez, Maria A.; Czerwinska, Jolanta. J. Chem. Educ. 2008, 85, 1704.
Acids / Bases |
Drugs / Pharmaceuticals
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The Correlation of Binary Acid Strengths with Molecular Properties in First-Year Chemistry Travis D. Fridgen
This article replaces contradictory explanations for the strengths of different binary acids in first-year chemistry textbooks with a single explanation that uses a BornHaber cycle involving homolyic bond dissociation energies, electron affinities, and ion solvation enthalpies to rationalize trends in the strengths of all binary acids.
Fridgen, Travis D. J. Chem. Educ. 2008, 85, 1220.
Acids / Bases |
Atomic Properties / Structure |
Aqueous Solution Chemistry |
Physical Properties |
Thermodynamics
|
The Chemical Adventures of Sherlock Holmes: The Serpentine Remains Ken Shaw
This story is a chemical mystery, set in the context of Sherlock Holmes and Dr. Watson, that emphasizes qualitative analysis, descriptive chemistry, and forensics.
Shaw, Ken. J. Chem. Educ. 2008, 85, 507.
Acids / Bases |
Applications of Chemistry |
Coordination Compounds |
Calorimetry / Thermochemistry |
Forensic Chemistry |
Qualitative Analysis
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Dynamic Reaction Figures: An Integrative Vehicle for Understanding Chemical Reactions Emeric Schultz
Describes the dynamic reaction figure, a flexible learning tool that can be used to balance chemical equations, predict the results of potential reactions, present the underlying mechanism of reactions, and solve quantitative problems in a number of areas.
Schultz, Emeric. J. Chem. Educ. 2008, 85, 386.
Acids / Bases |
Aqueous Solution Chemistry |
Mechanisms of Reactions |
Nonmajor Courses
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The Chemistry of Paper Preservation Henry A. Carter
This article examines the applications of chemistry to paper preservation. The acid-catalyzed hydrolysis of cellulose accounts for the deterioration of paper in library books and other written records. To combat this threat to our written heritage, new permanent papers have been developed that are relatively chemically stable and undergo a very slow rate of deterioration.
Carter, Henry A. J. Chem. Educ. 2007, 84, 1937.
Acids / Bases |
Applications of Chemistry |
Aqueous Solution Chemistry |
Free Radicals |
Gas Chromatography |
HPLC |
pH |
Kinetics |
Rate Law
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Concerning Lewis Acid–Base Theory for Proton Transfer Lawrence J. Sacks
Counterpoint commentary in response to a suggestion that the Lewis acidbase approach be applied to reactions such as ammoniawater and HClwater.
Sacks, Lawrence J. J. Chem. Educ. 2007, 84, 1415.
Acids / Bases |
Lewis Acids / Bases |
Theoretical Chemistry |
Brønsted-Lowry Acids / Bases
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The Chemistry of Swimming Pool Maintenance Carl Salter and David L. Langhus
This paper examines the key ideas behind swimming pool chemistry -- the central importance of pH and its effect on chlorine sanitation and calcium carbonate solubility. The paper also reviews the analytical procedures and common practices used to monitor and control pool chemistry or correct problems.
Salter, Carl; Langhus, David L. J. Chem. Educ. 2007, 84, 1124.
Acids / Bases |
Applications of Chemistry |
Aqueous Solution Chemistry |
Dyes / Pigments |
pH |
Photochemistry |
Precipitation / Solubility |
Water / Water Chemistry
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Flame Emission Spectrometry in General Chemistry Labs: Solubility Product (Ksp) of Potassium Hydrogen Phthalate Frazier W. Nyasulu, William Cusworth III, David Lindquist, and John Mackin
In this general chemistry laboratory, flame emission spectrometry is used to determine the potassium ion concentration in saturated solutions of potassium hydrogen phthalate. From these data the solubility products, the Gibbs free energies of solution, the standard enthalpy of solution, and the standard entropy of solution are calculated.
Nyasulu, Frazier W.; Cusworth, William, III; Lindquist, David; Mackin, John. J. Chem. Educ. 2007, 84, 456.
Acids / Bases |
Atomic Properties / Structure |
Spectroscopy |
Equilibrium |
Quantitative Analysis |
Thermodynamics |
Titration / Volumetric Analysis |
Solutions / Solvents |
Aqueous Solution Chemistry |
Atomic Spectroscopy
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Predicting Inorganic Reaction Products: A Critical Thinking Exercise in General Chemistry David G. DeWit
Describes a course module designed to afford practice in applying the principles encountered throughout the general chemistry sequence to understanding and predicting chemical reactivity and the products of simple inorganic reactions.
DeWit, David G. J. Chem. Educ. 2006, 83, 1625.
Acids / Bases |
Descriptive Chemistry |
Learning Theories |
Metals |
Nonmetals |
Oxidation / Reduction |
Periodicity / Periodic Table |
Reactions
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Equilibrium Constants and Water Activity Revisited David Keeports
Subtle arguments based upon the use of chemical potentials show that numerical values of solute molar concentrations can be used as good approximate activities in equilibrium calculations for reactions involving dilute solutions.
Keeports, David. J. Chem. Educ. 2006, 83, 1290.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Water / Water Chemistry |
Alcohols
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Equilibrium Constants and Water Activity Revisited E. J. Behrman
In teaching the effects of structure on acid strength, it is useful to compare, inter alia, water with primary alcohols.
Behrman, E. J. J. Chem. Educ. 2006, 83, 1290.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Water / Water Chemistry |
Alcohols
|
Equilibrium Constants and Water Activity Revisited E. J. Behrman
In teaching the effects of structure on acid strength, it is useful to compare, inter alia, water with primary alcohols.
Behrman, E. J. J. Chem. Educ. 2006, 83, 1290.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Water / Water Chemistry |
Alcohols
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Weak Acid pKa Determination Using Capillary Zone Electrophoresis Mike Solow
In this experiment, students use capillary zone electrophoresis to determine the effective mobility of benzoic acid at two different hydrogen ion concentrations. A plot of these data yields the pKa of benzoic acid.
Solow, Mike. J. Chem. Educ. 2006, 83, 1194.
Acids / Bases |
Aqueous Solution Chemistry |
Carboxylic Acids |
Electrophoresis |
Instrumental Methods
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Two "Gas-in-a-Bag" Reactions To Show the Predictive Power of the Relative AcidBase Strength Chart Brett Criswell
Describes a demonstration in which two different pairs of solid chemicals mixed in two different Ziploc bags in the presence of a small quantities of water react to produce gases. Students are informed that the reactions are BrnstedLowry acidbase type reactions and must determine which member in each pair will act as the acid and which as the base.
Criswell, Brett. J. Chem. Educ. 2006, 83, 1167.
Acids / Bases |
Aqueous Solution Chemistry |
Descriptive Chemistry |
Gases |
Reactions |
Brønsted-Lowry Acids / Bases
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Factors That Influence Relative Acid Strength in Water: A Simple Model Michael J. Moran
The pKa's of diverse aqueous acids HA correlate well with the sum of two gas-phase properties: the HA bond-dissociation enthalpy and the electron affinity of the A radical. It is suggested that rather than bond strength alone or bond polarity, the sum of the enthalpies of these two steps is a fairly good indicator of relative acidity.
Moran, Michael J. J. Chem. Educ. 2006, 83, 800.
Acids / Bases |
Aqueous Solution Chemistry |
Atomic Properties / Structure |
Free Radicals
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Intermolecular and Intramolecular Forces: A General Chemistry Laboratory Comparison of Hydrogen Bonding in Maleic and Fumaric Acids Frazier W. Nyasulu and John Macklin
This article presents a simple laboratory experiment that is designed to enhance students' understanding of inter- and intramolecular hydrogen bonding by demonstrating the comparative effect of these phenomena on some chemical and physical properties.
Nyasulu, Frazier W.; Macklin, John. J. Chem. Educ. 2006, 83, 770.
Acids / Bases |
Hydrogen Bonding |
Noncovalent Interactions |
Thermodynamics |
Titration / Volumetric Analysis
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pH Paradoxes: Demonstrating That It Is Not True That pH ≡ -log[H+] Christopher G. McCarty and Ed Vitz
Six demonstrations highlighting paradoxes that arise if pH is incorrectly defined as -log[H+] are presented as justification for the recommendation that pH should be correctly defined as pH = -log aH+ in textbooks.
McCarty, Christopher G.; Vitz, Ed. J. Chem. Educ. 2006, 83, 752.
Acids / Bases |
Aqueous Solution Chemistry |
Ion Selective Electrodes |
pH |
Quantitative Analysis
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A Closer Look at AcidBase Olfactory Titrations Kerry Neppel, Maria T. Oliver-Hoyo, Connie Queen, and Nicole Reed
This laboratory experiment uses the sense of smell to determine end points of acidbase titrations. Olfactory indicators include garlic, onions, and vanillin. Results show that garlic and vanillin gave the most accurate results when calculated NaOH molarities were compared to the standardized values. These olfactory indicators in acidbase titrations gave consistent results when tested by a diverse student population. The preparation times, cost, and safety issues are comparable to traditional titration experiments.
Neppel, Kerry; Oliver-Hoyo, Maria T.; Queen, Connie; Reed, Nicole. J. Chem. Educ. 2005, 82, 607.
Acids / Bases |
Quantitative Analysis |
Titration / Volumetric Analysis
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Unified Approximations: A New Approach for Monoprotic Weak Acid–Base Equilibria Harry L. Pardue, Ihab N. Odeh, and Teweldemedhin M. Tesfai
This article describes a new approach to approximate calculations for monoprotic acidbase equilibria in otherwise pure water. The new approach, identified herein as unified approximations, uses a simple decision criterion to select between situations that should be treated as deprotonation and protonation reactions. The remaining treatment takes account of changes in concentrations of conjugate acidbase pairs for all situations and ignores autoprotolysis only for situations for which the analytical concentration of either the conjugate acid or conjugate base will always be larger than zero.
Pardue, Harry L.; Odeh, Ihab N.; Tesfai, Teweldemedhin M. J. Chem. Educ. 2004, 81, 1367.
Acids / Bases |
Equilibrium |
Chemometrics
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Comparing the Titrations of Mixed-Acid Solutions Using Dropwise and Constant-Flow Techniques Paul Charlesworth, Matthew J. Seguin, and David J. Chesney
Real-time titration techniques are found to result in significantly decreased analysis times while maintaining a low experimental error.
Charlesworth, Paul; Seguin, Matthew J.; Chesney, David J. J. Chem. Educ. 2003, 80, 1311.
Acids / Bases |
Laboratory Computing / Interfacing |
Quantitative Analysis |
Titration / Volumetric Analysis |
Laboratory Equipment / Apparatus |
Laboratory Management
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Acids and Bases in Layers: The Stratal Structure of an Ancient Topic Wobbe de Vos and Albert Pilot
This article identifies and discusses six successive "layers" that can be recognized in chapters on acids and bases in general chemistry textbooks, each the result of what once was a modernization; the cumulative result of these layers has become problematic, and some learning problems that students have when studying acids and bases become comprehensible when viewed from this perspective.
de Vos, Wobbe; Pilot , Albert. J. Chem. Educ. 2001, 78, 494.
Acids / Bases |
Learning Theories |
Lewis Acids / Bases |
Brønsted-Lowry Acids / Bases
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A Simplified Method for Finding the pKa of an Acid-Base Indicator by Spectrophotometry George S. Patterson
Experiments on determining the pKa of an acid-base indicator by visible spectroscopy are often found in analytical and physical chemistry lab texts. The procedure described here is a modification suitable for general chemistry lab students.
Patterson, George S. J. Chem. Educ. 1999, 76, 395.
Acids / Bases |
Equilibrium |
UV-Vis Spectroscopy
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Why and How To Teach Acid-Base Reactions without Equilibrium Terry S. Carlton
A stepwise method enables students to predict which acid-base reactions occur when two solutions are mixed. The complexities of equilibrium are avoided by treating reactions as all-or-none and by providing a table of acids in order of strength.
Carlton, Terry S. J. Chem. Educ. 1997, 74, 939.
Learning Theories |
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium
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The Chemistry of Paper Preservation: Part 4. Alkaline Paper Henry A. Carter
The use of alkaline paper can minimize the problem of acidity for new papers. This study focuses on the chemistry involved in the sizing of both acid and alkaline papers and the types of fillers used. The advantages and potential problems in alkaline paper making are also discussed.
Carter, Henry A. J. Chem. Educ. 1997, 74, 508.
Acids / Bases |
Industrial Chemistry |
Applications of Chemistry
|
Not So Late Night Chemistry with USD Koppang, Miles D.; Webb, Karl M.; Srinivasan, Rekha R.
Through the program, college students enhance their knowledge and expertise on a chemical topic and gain experience in scientific presentations. They also serve as role models to the high school students who can relate to college students more easily than the chemistry faculty members and their high school students.
Koppang, Miles D.; Webb, Karl M.; Srinivasan, Rekha R. J. Chem. Educ. 1994, 71, 929.
Forensic Chemistry |
Polymerization |
Electrochemistry |
Isotopes |
Acids / Bases
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Teaching the Truth about pH Hawkes, Stephen J.
-log[H+] is only an approximation to pH; how to teach pH to avoid misleading students.
Hawkes, Stephen J. J. Chem. Educ. 1994, 71, 747.
pH |
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium
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Pictorial Analogies XI: Concentrations and Acidity of Solutions Fortman, John J.
Visual analogies of the concentration of a solution, strength of a solution, super saturated solution, conjugate acid-base pairs, and inverse relationship between pH and [H+] and pOH and [OH-].
Fortman, John J. J. Chem. Educ. 1994, 71, 430.
Solutions / Solvents |
Aqueous Solution Chemistry |
Acids / Bases |
pH
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TITRATE: A Learning Tool for Acid-Base Titrations Ramette, Richard W.
Software that calculates and simulates the plot of a titration curve for any base or acid (up to hexaprotic) or any mixture (up to five substances).
Ramette, Richard W. J. Chem. Educ. 1994, 71, 238.
Acids / Bases |
Titration / Volumetric Analysis |
Aqueous Solution Chemistry
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A recipe for the preparation of a pH 7.00 calibration buffer Jackman, Donald C.
Simple recipe for preparation of a pH 7.00 calibration buffer based on the NIST standard.
Jackman, Donald C. J. Chem. Educ. 1993, 70, 853.
Acids / Bases |
Laboratory Management |
pH
|
Investigating protective coatings for steel Runyan, Tom; Herrmann, Mary
Learning about corrosion chemistry provides students with authentic inquiry experience as well as an opportunity to learn relevant and applicable content.
Runyan, Tom; Herrmann, Mary J. Chem. Educ. 1993, 70, 843.
Oxidation / Reduction |
Acids / Bases |
Metals |
Applications of Chemistry |
Consumer Chemistry |
Materials Science
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The acid-base package Ramette, Richard W.; Holmes, Jon L.
Software that will calculate theoretical titration curve data and the pH for any mixture of acids and/or bases.
Ramette, Richard W.; Holmes, Jon L. J. Chem. Educ. 1992, 69, 1010.
Acids / Bases |
pH |
Titration / Volumetric Analysis
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Analogical demonstrations Fortman, John J.
By illustrating an analogy with a visual demonstration, a student is aided in both understanding and remembering a lesson.
Fortman, John J. J. Chem. Educ. 1992, 69, 323.
Physical Properties |
Atomic Properties / Structure |
Amino Acids |
Proteins / Peptides |
Acids / Bases
|
The computer as student: An application of artificial intelligence Birk, James P.
The author describes how the development of computer software to teach about chemical reactivity also provides information about how we should teach several topics in general chemistry.
Birk, James P. J. Chem. Educ. 1992, 69, 294.
Oxidation / Reduction |
Acids / Bases
|
Standard states for water equilibrium. Baldwin, W. George; Burchill, C. Eugene.
The authors consider that Ka and Kb values for Bronsted acids and bases in aqueous solution represent one data set describing the properties of solutes in dilute aqueous solution.
Baldwin, W. George; Burchill, C. Eugene. J. Chem. Educ. 1992, 69, 255.
Water / Water Chemistry |
Equilibrium |
Brønsted-Lowry Acids / Bases
|
Advanced titration plots using spreadsheet scripting Currie, James O., Jr.; Whiteley, Richard V., Jr.
131. A spreadsheet aids in student understanding of acid/base titration calculations.
Currie, James O., Jr.; Whiteley, Richard V., Jr. J. Chem. Educ. 1991, 68, 923.
Acids / Bases |
Titration / Volumetric Analysis |
pH |
Laboratory Computing / Interfacing |
Equilibrium
|
Acid and base dissociation constants of water and its associated ions de Lange, A. M.; Potgieter, J. H.
By applying the Bronsted-Lowry concept of acids and bases, one can derive acid and base dissociation constants for water and its associated ions.
de Lange, A. M.; Potgieter, J. H. J. Chem. Educ. 1991, 68, 304.
Acids / Bases |
Equilibrium |
pH |
Brønsted-Lowry Acids / Bases
|
What chemistry do our students need to learn? Hawkes, Stephen J.
Suggested topics of importance to chemistry nonmajors.
Hawkes, Stephen J. J. Chem. Educ. 1989, 66, 831.
Nonmajor Courses |
Oxidation / Reduction |
Geochemistry |
Atmospheric Chemistry |
Brønsted-Lowry Acids / Bases
|
The acid-base package: A collection of useful programs for proton-transfer systems Hawkes, Stephen J.
Four programs that deal with the types of acid-base calculations normally encountered in introductory and analytical chemistry courses.
Hawkes, Stephen J. J. Chem. Educ. 1989, 66, 830.
Acids / Bases |
Chemometrics
|
Kinetics of the fading of phenolphthalein in alkaline solution Nicholson, Lois
The fading of phenolphthalein in alkaline solution can serve as the basis for an experiment illustrating first-order kinetics.
Nicholson, Lois J. Chem. Educ. 1989, 66, 725.
Acids / Bases |
Kinetics
|
Rating antacids in Consumer Reports Martin, Geoffrey
This article presents a Consumer Reports study on antacid effectiveness via titration.
Martin, Geoffrey J. Chem. Educ. 1988, 65, 214.
Acids / Bases |
Titration / Volumetric Analysis |
Consumer Chemistry |
Drugs / Pharmaceuticals |
Food Science
|
Correct equilibrium constants for water Baldwin, W. George; Burchill, C. Eugene
Disagreement with the numerical values assigned to equilibrium constants.
Baldwin, W. George; Burchill, C. Eugene J. Chem. Educ. 1987, 64, 1067.
Equilibrium |
Water / Water Chemistry |
Acids / Bases |
Aqueous Solution Chemistry
|
A general approach for teaching hydrolysis of salts Aquirre-Ode, Fernando
Proposes a general, rigorous, and relatively simple approach for the hydrolysis of 1-1 electrolytes.
Aquirre-Ode, Fernando J. Chem. Educ. 1987, 64, 957.
Acids / Bases |
Aqueous Solution Chemistry |
Solutions / Solvents
|
Buffer capacity: An undergraduate laboratory experiment Russo, Steven O.; Hanania, George I. H.
A quantitative experiment that can demonstrate buffer action and the measurement of buffer capacity, for a given buffer system, over a range of pH.
Russo, Steven O.; Hanania, George I. H. J. Chem. Educ. 1987, 64, 817.
Acids / Bases |
pH |
Aqueous Solution Chemistry
|
Acid rain effects on stone monuments Charola, A. Elena
What is acid rain? Which stones are used to make mountains? How are the stones affected by acid rain?
Charola, A. Elena J. Chem. Educ. 1987, 64, 436.
Acids / Bases |
Applications of Chemistry |
Atmospheric Chemistry |
Geochemistry
|
On a common graphical flaw in the carboxylic acid/alcohol relative acidity argument McClard, Ronald W.
Why are carboxylic acids so much more acidic than aliphatic alcohols?
McClard, Ronald W. J. Chem. Educ. 1987, 64, 416.
Carboxylic Acids |
Alcohols |
Acids / Bases
|
Annotating reaction equations Tykodi, R. J.
Annotating aqueous solution reactions fosters recognition of the fundamental reaction categories; ready recognition of a reaction type is the first step toward understanding the "whys and wherefores" inherent in the reaction.
Tykodi, R. J. J. Chem. Educ. 1987, 64, 243.
Aqueous Solution Chemistry |
Reactions |
Acids / Bases |
Gases |
Precipitation / Solubility |
Oxidation / Reduction
|
Density gradient columns for chemical displays Guenther, William B.
An important advantage of these demonstrations of complex chemistry is that students can observe them over a period of time as they grasp concepts of solution equilibria.
Guenther, William B. J. Chem. Educ. 1986, 63, 148.
Acids / Bases |
pH |
Coordination Compounds |
Metals
|
The relative strength of oxyacids and its application Monroe, Manus
A simple technique for predicting the relative strength of oxyacids and their anions among students unfamiliar with Ka and pKa.
Monroe, Manus J. Chem. Educ. 1985, 62, 41.
Acids / Bases |
Descriptive Chemistry |
Aqueous Solution Chemistry |
Brønsted-Lowry Acids / Bases
|
An analogy for the leveling effect Macomber, Roger S.
Analogy to help students understand the leveling effect of certain solvents.
Macomber, Roger S. J. Chem. Educ. 1984, 61, 128.
Acids / Bases |
Aqueous Solution Chemistry |
Solutions / Solvents |
Brønsted-Lowry Acids / Bases
|
Empirical pKb and pKa for nonmetal hydrides from periodic table position Bayless, Philip L.
The equation in this article was developed by the author. It estimates the aqueous pKa for certain acids to an average deviation of 0.1pK unit for those with experimentally determined values and agrees with experimentally determined values, and as well as with estimates for those too weak or too strong to be measured.
Bayless, Philip L. J. Chem. Educ. 1983, 60, 546.
Acids / Bases |
pH |
Chemometrics
|
A physical model to demonstrate acid-base conjugate pairs Naylor, Robert W.
There seems to be a great deal of confusion among students over the relationship of the strength of a conjugate acid or base to its respective precursor. Using magnets, an extremely simple method of demonstrating that weak acids give strong bases and vice versa can be easily performed.
Naylor, Robert W. J. Chem. Educ. 1981, 58, 1017.
Acids / Bases
|
Red cabbage and the electrolysis of water Skinner, James F.
The demonstration profiled here has proven effective in bringing together concepts from acid-base chemistry and electrochemistry.
Skinner, James F. J. Chem. Educ. 1981, 58, 1017.
Electrochemistry |
Water / Water Chemistry |
Acids / Bases
|
Red cabbage and the electrolysis of water Skinner, James F.
The demonstration profiled here has proven effective in bringing together concepts from acid-base chemistry and electrochemistry.
Skinner, James F. J. Chem. Educ. 1981, 58, 1017.
Electrochemistry |
Water / Water Chemistry |
Acids / Bases
|
Theory and practical use of an hydrogen electrode in aqueous-organic media Letellier, P.; Millot, F.; Baffier, N.; Combes, R.
These authors make a case for a greater use of hydrogen electrodes for acidity measurements in student laboratory courses.
Letellier, P.; Millot, F.; Baffier, N.; Combes, R. J. Chem. Educ. 1981, 58, 576.
Acids / Bases |
Electrochemistry |
Oxidation / Reduction
|
Strong and weak acids and bases Deck, Joseph C.
The designations "strong" and "weak" are used in various ways, and often with respect to the same compound in different situations.
Deck, Joseph C. J. Chem. Educ. 1979, 56, 814.
Acids / Bases |
Equilibrium |
Aqueous Solution Chemistry
|
Chemistry tutorial programs on display terminals Heit, M.; Jones, W. E.; Wasson, John
Heit, M.; Jones, W. E.; Wasson, John J. Chem. Educ. 1979, 56, 787.
Acids / Bases |
pH
|
The great fallacy of the H+ ion: And the true nature of H3O+ Giguere, Paul A.
The hydronium ion is as real as its counterpart, the hydroxide ion.
Giguere, Paul A. J. Chem. Educ. 1979, 56, 571.
Acids / Bases |
Aqueous Solution Chemistry
|
Development of intellectual skills in the laboratory Ophardt, Charles E.
This first semester laboratory was designed to give instruction and practice in the intellectual skills of application, analysis, synthesis, and in Piaget's formal operations.
Ophardt, Charles E. J. Chem. Educ. 1978, 55, 485.
Learning Theories |
Qualitative Analysis |
Water / Water Chemistry |
Atmospheric Chemistry |
Acids / Bases |
Titration / Volumetric Analysis
|
Quality levels and the Brønsted theory Bank, Evelyn
Maintaining standards for a diversity of students and teaching hydrolysis with the Bronsted-Lowry theory. [Debut]
Bank, Evelyn J. Chem. Educ. 1977, 54, 548.
Acids / Bases |
Aqueous Solution Chemistry |
Brønsted-Lowry Acids / Bases
|
Effect of Ionic Strength on Equilibrium Constants Seymour, M. D.; Fernando, Quintus
Involves the determination of the acid dissociation constant of bromcresol green by a spectrophotometric method; using a graphing calculator, each student can perform the laboratory work and obtain his own data set.
Seymour, M. D.; Fernando, Quintus J. Chem. Educ. 1977, 54, 225.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
pH
|
Demonstrations for high school chemistry Castka, Joseph F.
A sequence of demonstrations that may serve to initiate and maintain student interest in the development of acid-base theories and bond strength.
Castka, Joseph F. J. Chem. Educ. 1975, 52, 394.
Acids / Bases |
Covalent Bonding |
Lewis Acids / Bases |
Brønsted-Lowry Acids / Bases
|
The aspirin project. Laboratory experiments for introductory chemistry Brown, David B.; Friedman, Lawrence B.
This laboratory project involves the synthesis, characterization, and study of some reactions of acetylsalicylic acid, and the comparison of acetylsalicylic acid with the major components of various commercial brands of aspirin tablets.
Brown, David B.; Friedman, Lawrence B. J. Chem. Educ. 1973, 50, 214.
Constitutional Isomers |
Synthesis |
Acids / Bases |
UV-Vis Spectroscopy |
Quantitative Analysis
|
Conjugate acid-base and redox theory Pacer, Richard A.
Consideration of relative oxidizing / reducing strength would be greatly facilitated if this topic were presented in terms of transfer of one or more electrons between members of a conjugate redox pair.
Pacer, Richard A. J. Chem. Educ. 1973, 50, 178.
Acids / Bases |
Oxidation / Reduction
|
Computer evaluation of titrations by Gran's method. An analytical chemistry experiment MacDonald, Timothy J.; Barker, Barbara J.; Caruso, Joseph A.
A computer program has been developed for the evaluation of potentiometric redox titration data by Gran's method.
MacDonald, Timothy J.; Barker, Barbara J.; Caruso, Joseph A. J. Chem. Educ. 1972, 49, 200.
Titration / Volumetric Analysis |
Quantitative Analysis |
Oxidation / Reduction |
Electrochemistry |
Acids / Bases
|
Chemical queries. Especially for introductory chemistry teachers Young, J. A.; Malik, J. G.; Parris, Michael
(1) Explains how free radicals differ from species such as NO3- and NH4+. (2) Explains why HI is a stronger acid than HF in aqueous solution. - answer by Parris. (3) Explains that it is possible to alter the half-life of a some radioactive processes through chemical means.
Young, J. A.; Malik, J. G.; Parris, Michael J. Chem. Educ. 1970, 47, 697.
Free Radicals |
Acids / Bases |
Aqueous Solution Chemistry |
Nuclear / Radiochemistry |
Isotopes
|
Component concentrations in solutions of weak acids Goldish, Dorothy M.
presents a new approach to teaching the subject of weak acid equilibria and its associated calculations.
Goldish, Dorothy M. J. Chem. Educ. 1970, 47, 65.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Chemometrics |
pH
|
Dissociation of weak acids and bases at infinite dilution Stock, D. Irwin
It is all too easy to forget that in a solution of infinite dilution the solvent itself is ionized to an extent governed by its ionization constant, and that the concentration of its ions will appear in the expression for the dissociation constant of the solute.
Stock, D. Irwin J. Chem. Educ. 1967, 44, 764.
Acids / Bases |
Aqueous Solution Chemistry |
Solutions / Solvents
|
Theoretical error in acid-base titrations Butcher, John; Quintus, Fernanado
The purpose of this report is to describe simple derivations of equations for titration error calculations for a number of acid-base titrations, and to show error curves for some typical cases.
Butcher, John; Quintus, Fernanado J. Chem. Educ. 1966, 43, 546.
Titration / Volumetric Analysis |
Quantitative Analysis |
Acids / Bases
|
The ionization of polyhydric acids: Numerical results for phosphoric acid Cooke, S. L., Jr.
Presents calculated ionization values for phosphoric acid across the normal aqueous pH range.
Cooke, S. L., Jr. J. Chem. Educ. 1965, 42, 620.
Acids / Bases |
Equilibrium
|
Teaching ionic equilibrium: Use of log chart transparencies Freiser, Henry; Fernando, Quintus
The use of graphical methods brings the problem of significance of various terms in complicated expressions into proper focus. Furthermore, a pictorial representation permits the student to see at a glance how the concentrations of various species in a system at equilibrium change with conditions.
Freiser, Henry; Fernando, Quintus J. Chem. Educ. 1965, 42, 35.
Aqueous Solution Chemistry |
Equilibrium |
Acids / Bases |
pH |
Chemometrics |
Brønsted-Lowry Acids / Bases
|
Solubility and pH Calculations (Butler, James N.) Ramette, R. W.
Ramette, R. W. J. Chem. Educ. 1964, 41, A970.
Aqueous Solution Chemistry |
Precipitation / Solubility |
pH |
Acids / Bases |
Chemometrics |
Enrichment / Review Materials
|
Automatic titrimetry in introductory college chemistry Zajicek, O. T.
The experiment described here employs an automatic pH titrator as a tool for the teaching of a detailed treatment of simultaneous equilibria.
Zajicek, O. T. J. Chem. Educ. 1964, 41, 554.
Titration / Volumetric Analysis |
pH |
Aqueous Solution Chemistry |
Acids / Bases |
Equilibrium
|
Development of the pH concept: A historical survey Szabadvary, Ferenc; Oesper, Ralph E., trans.
Traces the historical development of the following: a recognition of the importance of hydrogen ion concentration; an understanding of buffer solutions; and the concept and measurement of pH.
Szabadvary, Ferenc; Oesper, Ralph E., trans. J. Chem. Educ. 1964, 41, 105.
pH |
Acids / Bases |
Aqueous Solution Chemistry
|
Homogeneous catalysis: A reexamination of definitions Leisten, J. A.
Considers common questions regarding the action of catalysts by examining various typical examples.
Leisten, J. A. J. Chem. Educ. 1964, 41, 23.
Catalysis |
Reactions |
Acids / Bases
|
The hydrated hydronium ion Clever, H. Lawrence
It is the purpose of this brief review to cite and discuss some of the evidence for the existence of the trihydrated hydronium ion.
Clever, H. Lawrence J. Chem. Educ. 1963, 40, 637.
Water / Water Chemistry |
Aqueous Solution Chemistry |
Acids / Bases |
Brønsted-Lowry Acids / Bases
|
Demonstrations for the overhead projector Spiegler, K. S.; Gruenberg, J.; Trattner, Adriana; Weiss, W.
Demonstrations include the production of iron, potentiometric titration, photography, and the measurement of pH by indicators.
Spiegler, K. S.; Gruenberg, J.; Trattner, Adriana; Weiss, W. J. Chem. Educ. 1962, 39, 86.
Titration / Volumetric Analysis |
pH |
Aqueous Solution Chemistry |
Acids / Bases
|
Heat of reaction and H2SO4 concentration: A general chemistry experiment Wolthuis, Enno; Leegwater, Arie; Ploeg, John Vander
This procedure measures the heat of reaction between water and sulfuric acid of various concentrations; this information is used to determine the concentration of an unknown acid sample.
Wolthuis, Enno; Leegwater, Arie; Ploeg, John Vander J. Chem. Educ. 1961, 38, 472.
Calorimetry / Thermochemistry |
Reactions |
Aqueous Solution Chemistry |
Acids / Bases
|
Is there an alternative to pH? Crane, Francis E., Jr.
Provides some alternatives to the traditional definition of pH that introductory students may find more intuitive and less confusing.
Crane, Francis E., Jr. J. Chem. Educ. 1961, 38, 365.
pH |
Acids / Bases |
Nomenclature / Units / Symbols
|
Titration without burets Gaddis, Shirley W.
Describes the use of small polyethylene bottles to measure the acid strength of vinegar.
Gaddis, Shirley W. J. Chem. Educ. 1959, 36, 290.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis |
Qualitative Analysis |
Laboratory Equipment / Apparatus
|
Indicators and the basis for their use Gorin, George
Describes the method for selecting appropriate indicators and the teaching of this subject.
Gorin, George J. Chem. Educ. 1956, 33, 318.
Dyes / Pigments |
Titration / Volumetric Analysis |
Acids / Bases |
Aqueous Solution Chemistry |
Quantitative Analysis |
pH
|
Amphoteric molecules, ions and salts Davidson, David
It is the aim of this paper to call attention to the splendid opportunity amphoteric substances afford for the teaching of acid-base principles.
Davidson, David J. Chem. Educ. 1955, 32, 550.
Molecular Properties / Structure |
Acids / Bases |
pH |
Aqueous Solution Chemistry
|
Electronegativities in inorganic chemistry. III Sanderson, R. T.
The purpose of this paper is to illustrate some of the practical applications of electronegativities and charge distribution.
Sanderson, R. T. J. Chem. Educ. 1954, 31, 238.
Atomic Properties / Structure |
Covalent Bonding |
Acids / Bases
|
The overhead projector and chemical demonstrations Slabaugh, W. H.
Chemical demonstrations described for use with an overhead projector include the relative activity of metals, the electrolysis of water, the random motion of gas molecules, the action of metal couples, the relative strength of acids, the qualitative aspects of optical activity, and electrochemistry.
Slabaugh, W. H. J. Chem. Educ. 1951, 28, 579.
Metals |
Kinetic-Molecular Theory |
Acids / Bases |
Electrochemistry |
Aqueous Solution Chemistry
|
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