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Journal Articles: 17 results
Evaluating Solubility of Sparingly Soluble Diprotic Acid Salts  Jean M. Nigretto
The use of logarithmic concentration diagrams as a convenient tool for finding approximate solutions to the pH of solutions containing sparingly soluble diprotic acid salts in pure water; an application of this method based on a series of carbonate salts is presented.
Nigretto, Jean M. J. Chem. Educ. 2001, 78, 631.
Acids / Bases |
Aqueous Solution Chemistry |
Equilibrium |
Solutions / Solvents |
Precipitation / Solubility |
pH
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
Spreadsheet Techniques for Evaluating the Solubility of Sparingly Soluble Salts of Weak Acids  José L. Guinón, José García-Antón, and Valentín Pérez-Herranz
A spreadsheet of Microsoft Excel for determining the solubility of sparingly soluble salts is described. The chart and worksheet are shown simultaneously on the screen. The worksheet can be used for any salt by merely changing the data for the solubility product constant and ionization constants.
Guinn, Jos L.; Garca-Antn, Jos; Prez-Herranz, Valentn. J. Chem. Educ. 1999, 76, 1157.
Computational Chemistry |
Equilibrium |
Laboratory Computing / Interfacing |
Quantitative Analysis |
Acids / Bases |
Precipitation / Solubility
The Ammonia Smoke Fountain: An Interesting Thermodynamic Adventure  M. Dale Alexander
The ammonia smoke fountain demonstration utilizes a modification of the apparatus used in the standard ammonia fountain. The modification allows for the introduction of hydrogen chloride gas into a flask of ammonia rather than water. The flow rate of hydrogen chloride gas into the flask in the smoke fountain is not constant, but periodic; that is, the smoke puffs from the end of the tube. This unexpected behavior elicits an interesting thermodynamic explanation.
Alexander, M. Dale. J. Chem. Educ. 1999, 76, 210.
Acids / Bases |
Gases |
Thermodynamics |
Reactions |
Stoichiometry |
Precipitation / Solubility
Letters to the Editor  
The author points out that in a previous article, "Why Is Bismuth Subchloride Soluble in Acid," a key reaction which aids in the dissolving of bismuth subchloride is omitted.
J. Chem. Educ. 1998, 75, 523.
Acids / Bases |
Equilibrium |
Precipitation / Solubility
Why is Bismuth Subchloride Soluble in Acid?  Damon Diemente
It is shown that the solubility of BiOCl can be explained as a consequence of the shifting of hydrolysis equilibriums upon the addition of acid. Two demonstrations suitable for classroom use are presented, with detailed discussion of each.
Diemente, Damon. J. Chem. Educ. 1997, 74, 398.
Acids / Bases |
Equilibrium |
Precipitation / Solubility |
Solutions / Solvents
The Teaching of Precipitation Equilibrium: A New Approach  Ana M. V. S. V. Cavaleiro
In this paper we present a simplified integrated approach to the calculation of the solubility in water of a salt, and the pH of the saturated solution, taking into account the acid-base reactions of the anion.
Cavaleiro, Ana M. V. S. V. J. Chem. Educ. 1996, 73, 423.
Precipitation / Solubility |
pH |
Solutions / Solvents |
Acids / Bases
Crystallization of Supersaturated Sodium Acetate and the Temperature Dependence of the Autoionization Constant of Water  Joseph A. Pergler, Ronald O. Ragsdale, and Thomas G. Richmond
A procedure to qualitatively demonstrate the variation of the autoionization constant of water with temperature.
Pergler, Joseph A.; Ragsdale, Ronald O.; Richmond, Thomas G. J. Chem. Educ. 1995, 72, 1027.
Crystals / Crystallography |
Aqueous Solution Chemistry |
Solutions / Solvents |
Acids / Bases |
Precipitation / Solubility |
Water / Water Chemistry
Calculation of solubilities of carbonates and phosphates in water as influenced by competitive acid-base reactions  Lagier, Claudia; Olivieri, Alejandro
Examples of the calculation of the solubilities of carbonates and phosphates in water as influenced by competitive acid-base reactions and their practical applications.
Lagier, Claudia; Olivieri, Alejandro J. Chem. Educ. 1990, 67, 934.
Precipitation / Solubility |
Aqueous Solution Chemistry |
Acids / Bases |
Chemometrics |
Equilibrium |
Water / Water Chemistry |
Applications of Chemistry
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
A comparison of base strengths using visual and EMF observations  Campbell, J. A.
A series of sequentially added dilute aqueous solutions whose changes provide evidence for different degrees of dissociation of a series and complexes.
Campbell, J. A. J. Chem. Educ. 1975, 52, 185.
Acids / Bases |
Aqueous Solution Chemistry |
Coordination Compounds |
Precipitation / Solubility
Stomach upset caused by aspirin  Hobey, William D.; Davenport, Horace W.
The chemistry behind the slight damage that aspirin causes to the lining of the stomach.
Hobey, William D.; Davenport, Horace W. J. Chem. Educ. 1973, 50, 212.
Acids / Bases |
Solid State Chemistry |
Precipitation / Solubility |
Equilibrium |
Consumer Chemistry |
Drugs / Pharmaceuticals |
Lipids
Ratio diagrams: A simple graphical representation of complicated equilibria  de Levie, R.
Introduces and demonstrates the usefulness and general applicability of ratio diagrams as the simplest graphical representation of equilibria involving mononuclear species.
de Levie, R. J. Chem. Educ. 1970, 47, 187.
Equilibrium |
Acids / Bases |
pH |
Aqueous Solution Chemistry |
Precipitation / Solubility
Le Chtelier and ionic equilibria  Ringbom, Anders
When s solution contains several weak acids, the squares of the separately calculated hydrogen ion concentrations of all weak acids in the solution are additive.
Ringbom, Anders J. Chem. Educ. 1968, 45, 442.
Equilibrium |
Acids / Bases |
Precipitation / Solubility |
Solutions / Solvents
Demonstration of chemical reaction via aerosol spray reagents  Stedman, Earl D.
Demonstrations of chemical reactions via aerosol spray reagents may include acid-base indicators and precipitation reactions.
Stedman, Earl D. J. Chem. Educ. 1966, 43, 377.
Acids / Bases |
Precipitation / Solubility |
Reactions
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
Calculating titration errors  Butler, James N.
This paper presents some explicit expressions for the titration error in acid-base and precipitation titrations, as well as a simple method for deciding qualitatively whether or not a given titration is feasible.
Butler, James N. J. Chem. Educ. 1963, 40, 66.
Titration / Volumetric Analysis |
Chemometrics |
Quantitative Analysis |
Equilibrium |
Acids / Bases |
Precipitation / Solubility