TIGER

Journal Articles: 33 results
Magnetized Water: Science or Fraud?  L. Lahuerta Zamora, G. M. Antón-Fos, P. A. Alemán López, and R. V. Martin Algarra
Commercial water magnetizers provide a unique opportunity to help university and secondary students develop appropriate skepticism against extraordinary claims and use testing as the basis for their scientific evaluation.
Lahuerta Zamora, L.; Antón-Fos, G. M.; Alemán López, P. A.; Martin Algarra, R. V. J. Chem. Educ. 2008, 85, 1416.
Aqueous Solution Chemistry |
Magnetic Properties |
pH |
Titration / Volumetric Analysis |
Water / Water Chemistry
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
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
The Great Wakonse Earthquake of 2003: A Short, Problem-Based Introduction to the Titration Concept  Brian P. Coppola, Amy C. Gottfried, Robyn L. Gdula, Alan L. Kiste, and Nathan W. Ockwig
This activity introduces nonscience adult learners to the concept of titration from real-world instructions about earthquake water safety found in a California phone book.
Coppola, Brian P.; Gottfried, Amy C.; Gdula, Robyn L.; Kiste, Alan L.; Ockwig, Nathan W. J. Chem. Educ. 2006, 83, 600.
Acids / Bases |
Applications of Chemistry |
Aqueous Solution Chemistry |
Qualitative Analysis |
Titration / Volumetric Analysis |
Water / Water Chemistry
Chemical Characterization of Activated Carbon Fibers and Activated Carbons  J. M. Valente Nabais and P. J. M. Carrott
The main objective of this laboratory is the chemical characterization of carbon materials, mainly activated carbons and activated carbon fibers, using several methods to obtain the information without using expensive instruments.
Valente Nabais, J. M.; Carrott, P. J. M. J. Chem. Educ. 2006, 83, 436.
Acids / Bases |
Aqueous Solution Chemistry |
Materials Science |
Surface Science |
Titration / Volumetric Analysis
Quantitative Determination of Citric and Ascorbic Acid in Powdered Drink Mixes: A High School or General Chemistry Experiment  Samuella B. Sigmann and Dale E. Wheeler
This article provides a method to quantitatively determine the amount of both citric and ascorbic acid in a given sample of a powdered drink mix. The total moles of acid in the sample are determined by titration with sodium hydroxide. Moles of ascorbic acid are determined by titration with potassium iodate. Moles of citric acid are determined by difference.
Sigmann, Samuella B.; Wheeler, Dale E. J. Chem. Educ. 2004, 81, 1479.
Acids / Bases |
Aqueous Solution Chemistry |
Consumer Chemistry |
Food Science |
Quantitative Analysis |
Titration / Volumetric Analysis
Titrimetric Determination of Carbon Dioxide in a Heterogeneous Sample ("Pop Rocks")  Craig M. Davis and Matthew C. Mauck
Procedure for determining the carbon dioxide content of Pop Rocks candy through titrimetry.
Davis, Craig M.; Mauck, Matthew C. J. Chem. Educ. 2003, 80, 552.
Acids / Bases |
Quantitative Analysis |
Aqueous Solution Chemistry |
Consumer Chemistry |
Titration / Volumetric Analysis |
Applications of Chemistry
The Analysis of Seawater: A Laboratory-Centered Learning Project in General Chemistry  Jodye I. Selco, Julian L. Roberts, Jr., and Daniel B. Wacks
Experiment designed to introduce students to qualitative and quantitative analysis methods (gravimetric analysis, potentiometric titration, ion-selective electrodes, and atomic absorption and atomic emission spectroscopy) in the context of an overall analysis of an environmental sample.
Selco, Jodye I.; Roberts, Julian L., Jr.; Wacks, Daniel B. J. Chem. Educ. 2003, 80, 54.
Aqueous Solution Chemistry |
Instrumental Methods |
Qualitative Analysis |
Quantitative Analysis |
Water / Water Chemistry |
Gravimetric Analysis |
Titration / Volumetric Analysis |
Ion Selective Electrodes |
Atomic Spectroscopy |
Potentiometry
Principal Species and pH in Acid–Base Solutions  Robert M. Hanson
Web page that allows one to determine the concentrations of principal species in a variety of solutions or mixtures of solutions; also allows a virtual titration.
Hanson, Robert M. J. Chem. Educ. 2002, 79, 1486.
Acids / Bases |
Aqueous Solution Chemistry |
Solutions / Solvents |
Titration / Volumetric Analysis |
Enrichment / Review Materials
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
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
From Christmas Ornament to Glass Electrode  Rogério T. da Rocha, Ivano G. R. Gutz, and Claudimir L. do Lago
Instructions and use of a homemade glass electrode for pH measurements/titrations.
Da Rocha, Rogerio T.; Gutz, Ivano G. R.; do Lago, Claudimir L. J. Chem. Educ. 1995, 72, 1135.
Laboratory Equipment / Apparatus |
Electrochemistry |
Titration / Volumetric Analysis |
Ion Selective Electrodes |
Aqueous Solution Chemistry |
Acids / Bases |
Laboratory Management |
pH
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
Microscale experiments: Dissolved oxygen and chloride determination in water  Crosson, Mary; Gibb, Reen
Determining the dissolved oxygen and chloride content of water samples through titrations.
Crosson, Mary; Gibb, Reen J. Chem. Educ. 1992, 69, 830.
Microscale Lab |
Water / Water Chemistry |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
A different view of using titrimetric data  Castillo S., Carlos
Using titration data to obtain the dissociation constant of the acid under consideration.
Castillo S., Carlos J. Chem. Educ. 1985, 62, 443.
Acids / Bases |
Titration / Volumetric Analysis |
Quantitative Analysis |
Aqueous Solution Chemistry
Mysterious stoichiometry  Bowman, L. H.; Shull, C. M.
The student's task in this experiment is to determine the composition of a compound of chromium produced in an electrolytic cell.
Bowman, L. H.; Shull, C. M. J. Chem. Educ. 1975, 52, 186.
Titration / Volumetric Analysis |
Quantitative Analysis |
Stoichiometry |
Aqueous Solution Chemistry |
Electrochemistry |
Electrolytic / Galvanic Cells / Potentials
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
Determination of successive ionization constants: A computer assisted laboratory experiment  Jensen, R. E.; Garvey, R. G.; Paulson, B. A.
The computer programs described here plot students' titration data, locate equivalence points of the titration, calculate the apparent equivalent mass of the acid, and determine the successive ionization constants of the acid.
Jensen, R. E.; Garvey, R. G.; Paulson, B. A. J. Chem. Educ. 1970, 47, 147.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
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
A distribution experiment  Campbell, J. A.; Nelson, Douglas; Rudesill, John
An experiment to determine the distribution coefficient of an acid between an aqueous and nonaqueous phase.
Campbell, J. A.; Nelson, Douglas; Rudesill, John J. Chem. Educ. 1969, 46, 454.
Acids / Bases |
Aqueous Solution Chemistry |
Thermodynamics |
Equilibrium |
Titration / Volumetric Analysis
Corrections for simple equations for titration curves of monoprotic acids  Cortelyou, W. P.
Presents corrections for simple equations for titration curves of monoprotic acids and their derivations.
Cortelyou, W. P. J. Chem. Educ. 1968, 45, 677.
Acids / Bases |
Titration / Volumetric Analysis |
pH |
Aqueous Solution Chemistry
Is a weak acid monoprotic? A new look at titration curves  Sturrock, Peter E.
It is suggested that experimental values of ?pH may be employed as a simple, yet sensitive, criterion to determine whether an unknown acid is monoprotic.
Sturrock, Peter E. J. Chem. Educ. 1968, 45, 258.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis |
pH
Acid-base titration and distribution curves  Waser, Jurg
Presents an alternative method for the calculation of acid-base titration curves.
Waser, Jurg J. Chem. Educ. 1967, 44, 274.
Acids / Bases |
Titration / Volumetric Analysis |
Quantitative Analysis |
Aqueous Solution Chemistry
A new twist to Ksp evaluation  Hazel, J. Fred
Evaluating the concentration of slightly soluble slats by passing the saturated solution through a cation resin and titrating the resulting acid in the eluate.
Hazel, J. Fred J. Chem. Educ. 1966, 43, 636.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
Simple equipment for automatic potentiometric pH titrations  Olsen, Eugene D.
This paper describes a simple yet versatile apparatus employing a siphon pipet to deliver titrant solution automatically and accurately during the course of a titration.
Olsen, Eugene D. J. Chem. Educ. 1966, 43, 310.
pH |
Titration / Volumetric Analysis |
Electrochemistry |
Aqueous Solution Chemistry |
Quantitative Analysis |
Laboratory Equipment / Apparatus
Experimental approach to stoichiometry. In first-year chemistry at Northwestern  King, L. Carroll; Cooper, Milton
Presents five experiments in which students are given a minimal set of directions and a simply stated objective.
King, L. Carroll; Cooper, Milton J. Chem. Educ. 1965, 42, 464.
Stoichiometry |
Coordination Compounds |
Undergraduate Research |
Aqueous Solution Chemistry |
Solutions / Solvents |
Precipitation / Solubility |
Titration / Volumetric Analysis
Computer program for the calculation of acid-base titration curves  Emery, Allan R.
Describes the development of a computer program for the calculation of acid-base titration curves.
Emery, Allan R. J. Chem. Educ. 1965, 42, 131.
Titration / Volumetric Analysis |
Acids / Bases |
Aqueous Solution Chemistry |
Chemometrics
Overhead projection with the pH meter  Hoff, Darrel B.
Describes a means of projecting an image of a pH meter.
Hoff, Darrel B. J. Chem. Educ. 1964, 41, 662.
pH |
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
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
Writing a chemical equation from titration data: Experiment for general chemistry  State, Harold M.
Students titrate phosphoric acid with sodium hydroxide to determine the chemical formula of Na2HPO4.
State, Harold M. J. Chem. Educ. 1962, 39, 297.
Acids / Bases |
Titration / Volumetric Analysis |
Aqueous Solution Chemistry |
Stoichiometry
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
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