| Journal Articles: 40 results |
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Construction of a Polyaniline Nanofiber Gas Sensor Shabnam Virji, Bruce H. Weiller, Jiaxing Huang, Richard Blair, Heather Shepherd, Tanya Faltens, Philip C. Haussmann, Richard B. Kaner, and Sarah H. Tolbert
The objectives of this lab are to synthesize different diameter polyaniline nanofibers and compare them as sensor materials. Its advantages include simplicity and low cost, making it suitable for both high school and college students, particularly in departments with modest means.
Virji, Shabnam; Weiller, Bruce H.; Huang, Jiaxing; Blair, Richard; Shepherd, Heather; Faltens, Tanya; Haussmann, Philip C.; Kaner, Richard B.; Tolbert, Sarah H. J. Chem. Educ. 2008, 85, 1102.
Acids / Bases |
Aromatic Compounds |
Conductivity |
Hydrogen Bonding |
Oxidation / Reduction |
Oxidation State |
pH |
Polymerization |
Synthesis
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Yet Another Variation on the Electrolysis of Water at Iron Nails Mark T. Stauffer and Justin P. Fox
Describes a variation on the electrolysis of water with iron nails in which a sharp contrast in the colors produced effectively demonstrates electrolysis and the diffusion of oxidized and reduced species from the electrodes.
Stauffer, Mark T.; Fox, Justin P. J. Chem. Educ. 2008, 85, 523.
Acids / Bases |
Electrochemistry |
Oxidation / Reduction |
Stoichiometry |
Water / Water Chemistry |
Electrolytic / Galvanic Cells / Potentials
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The Role of Water Chemistry in Marine Aquarium Design: A Model System for a General Chemistry Class Jeffrey J. Keaffaber, Ramiro Palma, and Kathryn R. Williams
Water chemistry is central to aquarium design, and it provides many potential applications for discussion in undergraduate chemistry and engineering courses. This article uses a hypothetical tank to house ocean sunfish as a model to show students the calculations and other considerations that are needed when designing a marine aquarium.
Keaffaber, Jeffrey J.; Palma, Ramiro; Williams, Kathryn R. J. Chem. Educ. 2008, 85, 225.
Acids / Bases |
Aqueous Solution Chemistry |
Consumer Chemistry |
Oxidation / Reduction |
Stoichiometry |
Water / Water Chemistry
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The Use of Conjugate Charts in Transfer Reactions: A Unified Approach Michael I. Allnutt
Redox reactions are discussed in terms of the relative strengths of the oxidant, the reductant, and their conjugates; a conjugate chart is a convenient and useful way of doing this. A similar chart for acids and bases that can be applied in the same manner is proposed.
Allnutt, Michael I. J. Chem. Educ. 2007, 84, 1659.
Acids / Bases |
Electrolytic / Galvanic Cells / Potentials |
Oxidation / Reduction |
Brønsted-Lowry Acids / Bases
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A Kinetics Demonstration Involving a Green–Red–Green Color Change Resulting from a Large-Amplitude pH Oscillation Brian W. Pfennig and Richard T. Roberts
Describes an oxidationreduction, clock reaction involving iodate, sulfite, and thiosulfate that produces large swings in pH, causing a combination of acidbase indicators to effect greenredgreen color changes.
Pfennig, Brian W.; Roberts, Richard T. J. Chem. Educ. 2006, 83, 1804.
Acids / Bases |
Dyes / Pigments |
Kinetics |
Oxidation / Reduction
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A Kool Reaction from the Fine Print Susan A. S. Hershberger and Arlyne M. Sarquis
Students investigate the reduction of artificial food dyes by citric acid-promoted oxidation of a metal in the form of fine or coarse steel wool. The artificial red and yellow food dyes present in drink mixes contain azo linkages (nitrogennitrogen double bonds) that are readily reduced to colorless products under mild reducing conditions.
Hershberger, Susan A. S.; Sarquis, Arlyne M. J. Chem. Educ. 2006, 83, 1792A.
Acids / Bases |
Consumer Chemistry |
Descriptive Chemistry |
Dyes / Pigments |
Food Science |
Oxidation / Reduction |
Reactions
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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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The Chemistry of Photographic Color Dye Formation Bruce E. Kahn
A laboratory activity is described where black and white photographs are converted to color images in a variety of ways.
Kahn, Bruce E. J. Chem. Educ. 2004, 81, 694.
Photochemistry |
Dyes / Pigments |
Acids / Bases |
Consumer Chemistry |
Industrial Chemistry |
Oxidation / Reduction
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The Lead-Acid Battery: Its Voltage in Theory and in Practice Richard S. Treptow
Lead-acid battery fundamentals, cell voltage and the Nernst equation, and an analysis of actual battery performance.
Treptow, Richard S. J. Chem. Educ. 2002, 79, 334.
Electrochemistry |
Oxidation / Reduction |
Thermodynamics |
Electrolytic / Galvanic Cells / Potentials |
Acids / Bases |
Applications of Chemistry
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Is Every Transparent Liquid Water? Muhamad Hugerat and Sobhi Basheer
Comparisons of the properties (polarity, electric conductivity, color change due to the presence of an acid-base indicator, and electrolysis) of three transparent and colorless liquids: water, glycerol, hexane, and ethanol.
Hugerat, Muhamad; Basheer, Sobhi. J. Chem. Educ. 2001, 78, 1041.
Acids / Bases |
Electrochemistry |
Oxidation / Reduction |
Conductivity |
Electrophoresis
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A Comparative Study of Microscale and Standard Burets Mono M. Singh, Cynthia B. McGowan, Zvi Szafran, and R. M. Pike
This paper describes a comparative study of the performance of microscale titrations using 2-mL microscale burets with those using Beral pipets and normal 50- and 10-mL burets. The usefulness of a microburet in general and analytical chemistry is demonstrated by presenting results from acid-base, oxidation-reduction, precipitation, complexometric, and pH titrations.
Singh, Mono M.; McGowan, Cynthia B.; Szafran, Zvi; Pike, Ronald M. J. Chem. Educ. 2000, 77, 625.
Acids / Bases |
Aqueous Solution Chemistry |
Laboratory Equipment / Apparatus |
Microscale Lab |
Quantitative Analysis |
Oxidation / Reduction |
Titration / Volumetric Analysis |
pH |
Precipitation / Solubility
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Entertaining Chemistry--Two Colorful Reactions John F. Elsworth
Solutions of acid and iodine, with and without starch, are mixed with alkaline solutions containing thiosulfate and appropriate salts to produce desirable color effects.
Elsworth, John F. J. Chem. Educ. 2000, 77, 484.
Acids / Bases |
Oxidation / Reduction
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Ascorbic Acid as a Standard for Iodometric Titrations: An Analytical Experiment for General Chemistry Cesar R. Silva, Jose A. Simoni, Carol H. Collins, and Pedro L. O. Volpe
Ascorbic acid is suggested as the weighable compound for the standardization of iodine solutions in an analytical experiment in general chemistry. The experiment involves an iodometric titration in which iodine reacts with ascorbic acid, oxidizing it to dehydroascorbic acid.
Silva, Cesar R.; Simoni, Jose A.; Collins, Carol H.; Volpe, Pedro L. O. J. Chem. Educ. 1999, 76, 1421.
Oxidation / Reduction |
Quantitative Analysis |
Titration / Volumetric Analysis |
Acids / Bases
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Is It Real Gold? Harold H. Harris
The oxidation-reduction couples involved in the corrosion of gold alloys and the dissolution of "noble" metals are related to an inquiry to the newspaper columnist, Ann Landers. the origin of several contemporary phrases (touch stone, acid test, Hallmark) are found in the chemistry of gold.
Harris, Harold H. J. Chem. Educ. 1999, 76, 198.
Acids / Bases |
Oxidation / Reduction |
Qualitative Analysis |
Applications of Chemistry
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Chemical Domino Demonstration M. Dale Alexander
The Chemical Domino Demonstration is both educational and entertaining. It provides an excellent means for a review of chemical concepts at the conclusion of a general chemistry course. This demonstration consists of a number of different chemical reactions occurring in sequence in a Rube Goldberg-type apparatus.
M. Dale Alexander. J. Chem. Educ. 1998, 75, 490.
Reactions |
Acids / Bases |
Oxidation / Reduction
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The Sodium Rainbow Miroslav Proksa
A new approach to the reaction of sodium with water to produce a "rainbow" of colors.
Proksa, Miroslav. J. Chem. Educ. 1997, 74, 942.
Acids / Bases |
Metals |
Oxidation / Reduction
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Constant-Current Coulometric Titration of Hydrochloric Acid James Swim, Edward Earps, Laura M. Reed, and David Paul
In this experiment we have combined the titration of a strong acid with a strong base and the electrolysis of water into one complete laboratory experience.
James Swim, Edward Earps, Laura M. Reed, and David Paul. J. Chem. Educ. 1996, 73, 679.
Titration / Volumetric Analysis |
Acids / Bases |
Water / Water Chemistry |
Electrochemistry |
Oxidation / Reduction
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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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General treatment of aqueous ionic equilibria using predominance diagrams Vale, J.; Fernandez-Pereira, C.; Alcalde, M.
This paper illustrates the advantage of a unified instructional treatment based on the similarities o equilibria between acid-base and oxidation-reduction reactions that could be used in a general chemistry course.
Vale, J.; Fernandez-Pereira, C.; Alcalde, M. J. Chem. Educ. 1993, 70, 790.
Acids / Bases |
Equilibrium |
Oxidation / Reduction
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Gas reactions in plastic bags: Relating laboratory observations to the atomic-molecular model Robinson, Maurice; Barrow, Gordon M.
Carrying out chemical reactions in Ziplock bags to investigate a variety of chemical concepts.
Robinson, Maurice; Barrow, Gordon M. J. Chem. Educ. 1992, 69, 1026.
Kinetic-Molecular Theory |
Gases |
Reactions |
Acids / Bases |
Oxidation / Reduction |
Photochemistry |
Atmospheric Chemistry |
Physical Properties
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The chemical logic of life and the earth's biosphere: A simple, one-diagram outline Ochiai, Ei-Ichiro
This diagram is intended to give a compact overall picture of the chemical logic of life and of the earth's biosphere.
Ochiai, Ei-Ichiro J. Chem. Educ. 1992, 69, 356.
Acids / Bases |
Oxidation / Reduction
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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
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Chem 1 concept builder (Lower, Steve with Instructional Software) Hair, Sally R.
A review of a software package designed for tutorial and drill.
Hair, Sally R. J. Chem. Educ. 1991, 68, A19.
Acids / Bases |
Oxidation / Reduction |
Stoichiometry |
Atomic Properties / Structure
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Teaching photometry with overhead projector experiments Gutz, Ivano G. R.; Angnes, Lucio; Pedrotti, Jairo J.
Description of a photometry demonstration with an overhead projector.
Gutz, Ivano G. R.; Angnes, Lucio; Pedrotti, Jairo J. J. Chem. Educ. 1991, 68, 325.
Potentiometry |
Acids / Bases |
Oxidation / Reduction |
Electrochemistry
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In praise of thiosulfate Tykodi, R. J.
The reactions of thiosulfate make impressive lecture demonstrations and worthwhile laboratory experiments.
Tykodi, R. J. J. Chem. Educ. 1990, 67, 146.
Acids / Bases |
Precipitation / Solubility |
Oxidation / Reduction |
Aqueous Solution Chemistry |
Stoichiometry
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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
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Acid pickling with amines: an experiment in applied chemistry for high school or freshman chemistry Spears, Steven G.; Spears, Larry G.; Spears, Joycelyn C.
A brief description of the removal of corrosion products and millscale from the surface of ferrous metals by acid pickling.
Spears, Steven G.; Spears, Larry G.; Spears, Joycelyn C. J. Chem. Educ. 1988, 65, 457.
Oxidation / Reduction |
Acids / Bases |
Amines / Ammonium Compounds |
Electrochemistry
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Introduction to overhead projector demonstrations Kolb, Doris
General suggestions for using the overhead projector and 21 demonstrations. [Debut]
Kolb, Doris J. Chem. Educ. 1987, 64, 348.
Rate Law |
Reactions |
Catalysis |
Equilibrium |
Transition Elements |
Metals |
Oxidation / Reduction |
Acids / Bases
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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
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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
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Soil analysis for high school chemistry students Eisenmann, Mary A.
Students examine the solubility of nitrate ions, the insolubility of iron hydroxide and iron carbonate, and the reaction between acid and carbonates.
Eisenmann, Mary A. J. Chem. Educ. 1980, 57, 897.
Agricultural Chemistry |
Plant Chemistry |
Applications of Chemistry |
Geochemistry |
Acids / Bases |
pH |
Oxidation / Reduction |
Precipitation / Solubility |
Aqueous Solution Chemistry
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Acid-base half-reactions - A useful formalism for review lessons Atkinson, G. F.
An effective way to draw analogies between acid-base and redox effects while reviewing both.
Atkinson, G. F. J. Chem. Educ. 1979, 56, 238.
Oxidation / Reduction |
Reactions |
Acids / Bases |
Enrichment / Review Materials
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A new chemistry program for nursing and allied health students Stanitski, Conrad L.; Sears, Curtis T., Jr.
Outlines and discusses the topics considered in a chemistry program for nursing and allied health students.
Stanitski, Conrad L.; Sears, Curtis T., Jr. J. Chem. Educ. 1975, 52, 226.
Nonmajor Courses |
Applications of Chemistry |
Medicinal Chemistry |
Oxidation / Reduction |
Catalysis |
Acids / Bases |
pH |
Metabolism |
Drugs / Pharmaceuticals
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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
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The difference in oxidizing strength of dilute and concentrated nitric acid Glasoe, Paul K.
H2S gas is bubbled through dilute and concentrated HNO3.
Glasoe, Paul K. J. Chem. Educ. 1972, 49, A644.
Acids / Bases |
Oxidation / Reduction
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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
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Miscellaneous Alyea, Hubert N.
These twelve overhead projection demonstrations include rates of reactions, clock reactions, the effect of temperature and the presence of a catalyst on the decomposition of hydrogen peroxide, the relationship between viscosity and temperature, equilibria, solubility product, and the common ion effect.
Alyea, Hubert N. J. Chem. Educ. 1970, 47, A437.
Oxidation / Reduction |
Kinetics |
Rate Law |
Reactions |
Acids / Bases |
Catalysis |
Equilibrium |
Precipitation / Solubility
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Benzoic acid tree Chen, Philip S.
Benzaldehyde undergoes autoxidation to benzoic acid by air, particularly upon exposure to light; the white benzoic acid is caused to form a crystalline tree on twisted pipe cleaners.
Chen, Philip S. J. Chem. Educ. 1970, 47, A119.
Carboxylic Acids |
Acids / Bases |
Crystals / Crystallography |
Oxidation / Reduction |
Aldehydes / Ketones
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Oxidation of copper by hydrochloric acid Walker, Noojin; George, Donald L.
Demonstrates the oxidation of copper by hydrochloric acid.
Walker, Noojin; George, Donald L. J. Chem. Educ. 1968, 45, A429.
Oxidation / Reduction |
Acids / Bases |
Electrochemistry
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The effect of nitrous acid on the oxidizing power of nitric acid Brasted, Robert C.
this demonstration illustrates that the oxidizing action of nitric acid may be considerably enhanced by small quantities of nitrous acid which are usually present.
Brasted, Robert C. J. Chem. Educ. 1951, 28, 442.
Acids / Bases |
Oxidation / Reduction |
Aqueous Solution Chemistry
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