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Journal Articles: 48 results
Complexometric Titration of Aluminum and Magnesium Ions in Commercial Antacids. An Experiment for General and Analytical Chemistry Laboratories  Shui-Ping Yang and Ruei-Ying Tsai
A novel experiment for determining the total and individual aluminum and magnesium ion content in commercial antacids is described. This experiment is developed with three independent protocols based on complexometric direct and back titrations containing the concepts and usages of blocking, masking, buffer controls and metallic indicators.
Yang, Shui-Ping; Tsai, Ruei-Ying. J. Chem. Educ. 2006, 83, 906.
Aqueous Solution Chemistry |
Chemometrics |
Consumer Chemistry |
Medicinal Chemistry |
Quantitative Analysis |
Titration / Volumetric Analysis |
UV-Vis Spectroscopy
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
A Closer Look at AcidBase 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 acidbase 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 acidbase 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
A Laser-Pointer-Based Spectrometer for Endpoint Detection of EDTA Titrations  Christopher E. Dahm, James W. Hall, and Brian E. Mattioni
A simple laser-pointer-based spectrometer has been developed for endpoint detection of EDTA titrations of magnesium and calcium. This spectrometer was built to decrease the uncertainty in determining the endpoint of titrations performed with a Calmagite indicator. With a photoresistor as the detector, and with the aid of a voltage-divider circuit, the quantity of light being absorbed can be followed with a simple pHvoltmeter. Students determine the endpoint by graphing the data and applying simple mathematics. BeerLambert studies with the spectrometer also show excellent agreement for a given set of solutions.
Dahm, Christopher E.; Hall, James W.; Mattioni, Brian E. J. Chem. Educ. 2004, 81, 1787.
Dyes / Pigments |
Laboratory Equipment / Apparatus |
Lasers |
Spectroscopy |
Titration / Volumetric Analysis
Sailing on the "C": A Vitamin Titration with a Twist  S. Sowa and A. E. Kondo
Guided inquiry experiment where students determine what measurements they need, design and carry out their own procedures, develop their own data and analyses, and make conclusions based on their results.
Sowa, S.; Kondo, A. E. J. Chem. Educ. 2003, 80, 550.
Titration / Volumetric Analysis |
Qualitative Analysis |
Oxidation / Reduction |
Applications of Chemistry
Precision in Microscale Titration  Julian L. Roberts Jr.
Comparing the precision of a 2-mL graduated pipet and 50-mL graduated buret in performing a microscale titration.
Roberts, Julian L., Jr. J. Chem. Educ. 2002, 79, 941.
Laboratory Equipment / Apparatus |
Chemometrics |
Microscale Lab |
Titration / Volumetric Analysis
Precision in Microscale Titration  Julian L. Roberts Jr.
Comparing the precision of a 2-mL graduated pipet and 50-mL graduated buret in performing a microscale titration.
Roberts, Julian L., Jr. J. Chem. Educ. 2002, 79, 941.
Laboratory Equipment / Apparatus |
Chemometrics |
Microscale Lab |
Titration / Volumetric Analysis
Microscale pH Titrations Using an Automatic Pipet  Edward B. Flint, Carrie L. Kortz, and Max A. Taylor
A technique for microscale pH titrations using 1-5 mL of analyte and titrant.
Flint, Edward B.; Kortz, Carrie L.; Taylor, Max A. J. Chem. Educ. 2002, 79, 705.
Acids / Bases |
Instrumental Methods |
Microscale Lab |
pH |
Titration / Volumetric Analysis
Acid-Base Indicators: A New Look at an Old Topic  Ara S. Kooser, Judith L. Jenkins, and Lawrence E. Welch
An acid-base titration in which students choose the best indicator from a set of possibilities using a conductivity probe to help them make an informed choice.
Kooser, Ara S.; Jenkins, Judith L.; Welch, Lawrence E. J. Chem. Educ. 2001, 78, 1504.
Acids / Bases |
Conductivity |
Dyes / Pigments |
Laboratory Computing / Interfacing |
Titration / Volumetric Analysis |
Quantitative Analysis
A Microscale Spectrophotometric Determination of Water Hardness  James S. Gordon
Measuring water hardness using EDTA as a titrant, calmagite as an indicator, a colorimeter, and a graphing calculator.
Gordon, James S. J. Chem. Educ. 2001, 78, 1089.
UV-Vis Spectroscopy |
Water / Water Chemistry |
Titration / Volumetric Analysis
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
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
Complexometric Titrations: Competition of Complexing Agents in the Determination of Water Hardness with EDTA  M. Cecilia Yappert and Donald B. DuPre
The competition of complexing agents for the same metal ion and the formation of colored metal-ion complexes is demonstrated with the use of an overhead projector. This demonstration can be used to emphasize both the relevance of the relative values of formation constants in the complexation of metal cations and the applicability of complexometric titrations in quantitative chemical analysis.
Yappert, M. Cecilia; DuPre, Donald B. J. Chem. Educ. 1997, 74, 1422.
Equilibrium |
Coordination Compounds |
Qualitative Analysis |
Quantitative Analysis |
Titration / Volumetric Analysis |
Aqueous Solution Chemistry |
Water / Water Chemistry |
Metals
The Gelation of Poly(Vinyl Alcohol) with Na2B4O7 · 10H2O: Killing Slime  K. W. McLaughlin, N. K. Wyffels, A. B. Jentz, and M. V. Keenan
The titration of slime with sulfuric acid allows students to examine the relationship between cross-linking, viscosity, and the onset of gelation. This modification to a popular chemistry demonstration produces an interesting chemistry laboratory experiment designed to introduce students to the relationship between molecular structure and the bulk properties of macromolecules.
McLaughlin, K. W.; Wyffels, N. K.; Jentz, A. B.; and Keenan, M. V. J. Chem. Educ. 1997, 74, 97.
Titration / Volumetric Analysis
A Student-Designed Potentiometric Titration: Quantitative Determination of Iron(II) by Caro's Acid Titration  Joyce R. Powell, Sheryl A. Tucker, William E. Acree Jr., Jennifer A. Sees, Lindsey H. Hall
A laboratory experiment involving the feasibility of using Caro's acid, H2SO5, as a titrant in the potentiometric determination of iron(II) is presented.
Powell, Joyce R.; Tucker, Sheryl A.; Acree Jr., William E.; Sees, Jennifer A.; Hall, Lindsey H. J. Chem. Educ. 1996, 73, 984.
Potentiometry |
Titration / Volumetric Analysis |
Oxidation / Reduction |
Quantitative Analysis
An MS-DOS microcomputer controlled titration system  Stangeland, Leiv Jonn; Anjo, Dennis M.
136. In this experiment the computer is employed to control the addition rate of titrant based on the change in pH of the analyte system.
Stangeland, Leiv Jonn; Anjo, Dennis M. J. Chem. Educ. 1992, 69, 296.
Titration / Volumetric Analysis |
pH |
Laboratory Computing / Interfacing
Cyclic indicator color change by titrant electrogeneration.  Stock, John T.
A simple but striking demonstration of coulometric titration.
Stock, John T. J. Chem. Educ. 1992, 69, 253.
Electrochemistry |
Acids / Bases |
Titration / Volumetric Analysis
A carbonate project introducing students to the chemistry lab  Dudek, Emily
A description of a first semester general chemistry laboratory that helps acquaint students with a large variety of chemistry laboratory procedures.
Dudek, Emily J. Chem. Educ. 1991, 68, 948.
Chemometrics |
Gravimetric Analysis |
Titration / Volumetric Analysis |
Separation Science
Chloride in natural waters: An environmental application of a potentiometric titration  Lisensky, George; Reynolds, Kelly.
An environmental application of a potentiometric titration to determine chloride found in fresh water.
Lisensky, George; Reynolds, Kelly. J. Chem. Educ. 1991, 68, 334.
Potentiometry |
Titration / Volumetric Analysis |
Green Chemistry |
Geochemistry |
Quantitative Analysis
Analysis of organic acids: A freshman laboratory experiment  Griswold, John R.; Rauner, Richard A.
In this experiment students select unknown carboxylic acids, determine their melting points, and investigate their solubility behavior in water and ethanol.
Griswold, John R.; Rauner, Richard A. J. Chem. Educ. 1990, 67, 516.
Acids / Bases |
Titration / Volumetric Analysis |
Stoichiometry |
Precipitation / Solubility
Chemical principles for the introductory laboratory, CHM 384 (Johnson, James F.)  Wegner, Carol
A comprehensive review of the title program which overviews basic techniques and concepts presented in introductory laboratory courses. Topics include: titration, equilibrium, Ksp, solubility, Beer's law, coordination complexes and first-order rates of reaction.
Wegner, Carol J. Chem. Educ. 1988, 65, A47.
Acids / Bases |
Titration / Volumetric Analysis |
UV-Vis Spectroscopy |
Equilibrium |
Solutions / Solvents |
Coordination Compounds |
Kinetics
E.M.E. Titration lab (Shelton, Roger)  Ogata, Philip H.
A review of an interactive software program that executes a lab simulation allowing students to master the titration process while helping students understand symbols and empirical formulas and sharpening students' data collection skills.
Ogata, Philip H. J. Chem. Educ. 1988, 65, A23.
Titration / Volumetric Analysis
Determination of the effect of various modes of cooking on the vitamin C content of a common food, green pepper: An introductory biochemistry experiment  Johnson, Eric R.
A great laboratory experiment that examines the effects of baking, boiling, steaming, and microwaving a green pepper on the pepper's nutritional level.
Johnson, Eric R. J. Chem. Educ. 1988, 65, 926.
Nutrition |
Titration / Volumetric Analysis |
Vitamins |
Food Science |
Applications of Chemistry
Iron analysis by redox titration: A general chemistry experiment  Kaufman, Samuel; Devoe, Howard
The authors have devised a simplified redox method for total iron analysis suitable for execution in a three-hour laboratory period by general chemistry students.
Kaufman, Samuel; Devoe, Howard J. Chem. Educ. 1988, 65, 183.
Oxidation / Reduction |
Titration / Volumetric Analysis |
Quantitative Analysis
An introductory laboratory exercise for acids and bases  Miller, Richard; Silberman, Robert
The authors have used this exercise as an introduction to acid-base chemistry before they do any acid-base titrations in the laboratory.
Miller, Richard; Silberman, Robert J. Chem. Educ. 1986, 63, 447.
Titration / Volumetric Analysis |
Acids / Bases
TRS-80 Chemistry Lab, Volume 1, Review II (Hallgren, Richard C.)  Beck, James D.
Programs covering the kinetic theory, Charles' law, Boyle' law, titration, and solubility.
Beck, James D. J. Chem. Educ. 1985, 62, A106.
Kinetic-Molecular Theory |
Gases |
Titration / Volumetric Analysis |
Precipitation / Solubility
TRS-80 Chemistry Lab, Volume 1, Review I (Hallgren, Richard C.)  Rowe, Frederick J.
Programs covering the kinetic theory, Charles' law, Boyle' law, titration, and solubility.
Rowe, Frederick J. J. Chem. Educ. 1985, 62, A105.
Kinetic-Molecular Theory |
Gases |
Titration / Volumetric Analysis |
Precipitation / Solubility
Colorblindness and titrations with visual indicators  Diehl, Harvey; Johnson, Dennis C.; Markuszewski, Richard; Moore, Robert M.
Discussion and investigation of the problem of colorblindness in determining the endpoints of titrations.
Diehl, Harvey; Johnson, Dennis C.; Markuszewski, Richard; Moore, Robert M. J. Chem. Educ. 1985, 62, 255.
Minorities in Chemistry |
Titration / Volumetric Analysis |
Quantitative Analysis |
Acids / Bases
Titrator, Review II (Dice, David D.)  Drake, Gordon P.
Program that allows the user to simulate the titration of either a strong or weak acid with a strong base.
Drake, Gordon P. J. Chem. Educ. 1984, 61, A273.
Acids / Bases |
Titration / Volumetric Analysis
Titrator, Review I (Dice, David D.)  Hill, Sister Mary Mechtilde, RSM
Program that allows the user to simulate the titration of either a strong or weak acid with a strong base.
Hill, Sister Mary Mechtilde, RSM J. Chem. Educ. 1984, 61, A273.
Acids / Bases |
Titration / Volumetric Analysis
The preparation of acid-base titration curves  McClendon, Michael
A simple technique for generating mechanically plotted titration curves using an electron pH meter and a low-voltage chart recorder.
McClendon, Michael J. Chem. Educ. 1984, 61, 1022.
Acids / Bases |
Titration / Volumetric Analysis |
Laboratory Equipment / Apparatus |
Quantitative Analysis
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
Determination of the percent Na4EDTA in bathroom cleaners  Kump, K. I.; Palocsay, F. A.; Gallaher, T. N.
There has been much publicity recently about the importance and virtues of relevant experiments in chemistry lab courses. This experiment is for the general chemistry student involving the analysis of bathroom cleaners and determining the concentration of active ingredients.
Kump, K. I.; Palocsay, F. A.; Gallaher, T. N. J. Chem. Educ. 1978, 55, 265.
Titration / Volumetric Analysis |
pH |
Consumer Chemistry |
Quantitative Analysis
Simple liquid-liquid extraction experiment for freshmen  Jones, Mark M.; Champion, Gwendalyn R.
A procedure can be described here can be carried out with the equipment normally present in a typical freshman laboratory. The experiment turns out to be a very good test of the student' technique and understanding.
Jones, Mark M.; Champion, Gwendalyn R. J. Chem. Educ. 1978, 55, 119.
Separation Science |
Liquids |
Titration / Volumetric Analysis
Simple titrimetric determination of lead in gasoline  Watt, Sandra L.; Martino, Theresa M.; Chamberlin, Margaret A.; Laswick, Patty H.
Chlorine is used to break the lead-carbon bonds of lead additives, and the lead is titrated with EDTA.
Watt, Sandra L.; Martino, Theresa M.; Chamberlin, Margaret A.; Laswick, Patty H. J. Chem. Educ. 1977, 54, 262.
Applications of Chemistry |
Quantitative Analysis |
Titration / Volumetric Analysis
Mercurimetric determination of chloride in Lite Salt. A freshman chemistry experiment  Long, G. G.; Hentz, F. C., Jr.
A titration that can be used to determine Cl-, Br-, or I- in a wide variety of mixtures.
Long, G. G.; Hentz, F. C., Jr. J. Chem. Educ. 1975, 52, 714.
Quantitative Analysis |
Titration / Volumetric Analysis |
Consumer Chemistry
A study of water pollution. An undergraduate chemistry laboratory experience  Sarkis, Vahak D.
In addition to its environmental relevance, a water pollution study of the inorganic constituents in water as outlined in this article, provides the student with certain important principles of chemistry namely, colorimetric and titrimetric procedures.
Sarkis, Vahak D. J. Chem. Educ. 1974, 51, 745.
Applications of Chemistry |
Metals |
Green Chemistry |
Water / Water Chemistry |
Titration / Volumetric Analysis
A simple recording titrator  Walton, Harold F.
Design and use of a simple recording titrator.
Walton, Harold F. J. Chem. Educ. 1973, 50, 795.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Quantitative Analysis
A simple, effective demonstration of titration curves and indicator selection  Nathan, Lawrence C.
The concepts of acid-base titration curves and selection of the appropriate indicator for an acid-base titration can be easily and effectively demonstrated by use of a potentiometric titration.
Nathan, Lawrence C. J. Chem. Educ. 1973, 50, 262.
Acids / Bases |
Dyes / Pigments |
Titration / Volumetric Analysis |
pH |
Quantitative Analysis
The determination of dissolved oxygen by the Winkler method. A student laboratory experiment  McCormick, Patrick G.
This method is based on the reaction between oxygen and a suspension of manganese(II) hydroxide in a strongly alkaline solution.
McCormick, Patrick G. J. Chem. Educ. 1972, 49, 839.
Water / Water Chemistry |
Aqueous Solution Chemistry |
Gases |
Quantitative Analysis |
Titration / Volumetric Analysis
A general chemistry experiment for the blind  Hiemenz, Paul C.; Pfeiffer, EIizabeth
Presents a method for weighing and a conductometric titration that relies on an audio signal.
Hiemenz, Paul C.; Pfeiffer, EIizabeth J. Chem. Educ. 1972, 49, 263.
Minorities in Chemistry |
Titration / Volumetric Analysis |
Electrochemistry
Transistorized power sources for constant current coulometric titration  Stock, John T.
This coulometric titrator uses a complementary pair of transistors to minimize heating affects and improve stability with respect to temperature; an example of experimental use for the apparatus is included.
Stock, John T. J. Chem. Educ. 1969, 46, 858.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Aqueous Solution Chemistry |
Quantitative Analysis |
Instrumental Methods |
Electrochemistry
The oxidation states of molybdenum  Stark, J. G.
This experiment involves a titrimetric determination of the oxidation states of molybdenum.
Stark, J. G. J. Chem. Educ. 1969, 46, 505.
Oxidation State |
Titration / Volumetric Analysis |
Transition Elements
Letter to the editor  Bhatnagar, Vijay Mohan
Distinguishes between alpha- and beta-amylose and their mixtures, particular with respect to iodimetric titrations.
Bhatnagar, Vijay Mohan J. Chem. Educ. 1967, 44, 771.
Titration / Volumetric Analysis |
Carbohydrates
Some experiments on the stoichiometry of reactions  Tietzie, H. R.
Students establish the stoichiometry of several reactions through volumetric analysis.
Tietzie, H. R. J. Chem. Educ. 1963, 40, 344.
Stoichiometry |
Titration / Volumetric Analysis
Laboratory group exercises in acid-base theory  Zuehlke, R. W.
An experiment to introduce the topic of acid-base titrimetry and illustrate the properties of acids and bases.
Zuehlke, R. W. J. Chem. Educ. 1962, 39, 354.
Acids / Bases |
Titration / Volumetric Analysis |
pH
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
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