16.4. Titrations of Weak Acids and Bases: Qualitative Aspects
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Connecting Solubility, Equilibrium, and Periodicity in a Green, Inquiry Experiment for the General Chemistry LaboratoryKristen L. Cacciatore, Jose Amado, Jason J. Evans, and Hannah Sevian Presents a novel first-year chemistry experiment that asks students to replicate procedures described in sample lab reports that lack essential information. This structure is designed to promote students' experimental design and data analysis skills as well as their understanding of the importance and essential qualities of written and verbal communication between scientists. Cacciatore, Kristen L.; Amado, Jose; Evans, Jason J.; Sevian, Hannah. J. Chem. Educ.2008, 85, 251.
Equilibrium |
Green Chemistry |
Periodicity / Periodic Table |
Solutions / Solvents |
Stoichiometry |
Titration / Volumetric Analysis
(Strept)Avidin–Biotin: Two Interrelated Experiments for the Introductory Chemistry LaboratoryDavid E. Hansen, Dengda Tang, Jon A. Sanborn, and Mark D. Marshall Describes a two-experiment sequence focusing on the noncovalent complex between the egg white protein avidin (or the similar protein streptavidin, which is expressed by the bacterium Streptomyces avidinii) and the essential cofactor biotin. The equilibrium constant for the binding of HABA to avidin is calculated from the data collected. Hansen, David E.; Tang, Dengda; Sanborn, Jon A.; Marshall, Mark D. J. Chem. Educ.2006, 83, 777.
Bioorganic Chemistry |
Computational Chemistry |
Equilibrium |
Titration / Volumetric Analysis
Quantitative Determination of Citric and Ascorbic Acid in Powdered Drink Mixes: A High School or General Chemistry ExperimentSamuella 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.
