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Titration Curves Drawing titration curves, titration curves for various types of acid-base titration, and depictions of color change observed during a titration using several different pH indicators are presented.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Titration A large number of movies and images dealing with titration procedures and techniques are presented.
In Partial Defense of Calculating Titration CurvesStephen J. Hawkes Calculating a titration curve is an unnecessarily complicated method of explaining how a buffer works, and equilibrium calculations are grossly over-emphasized in chemistry teaching. Hawkes, Stephen J. J. Chem. Educ.2008, 85, 499.
Titration / Volumetric Analysis
In Partial Defense of Calculating Titration CurvesDaniel C. Harris There are more important subjects than calculating titration curves for a student whose only formal exposure to analytical chemistry will be an introductory course and whose primary interest is likely to be outside of chemistry (such as the life sciences). Harris, Daniel C. J. Chem. Educ.2008, 85, 498.
Titration / Volumetric Analysis |
Quantitative 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.
ChemPaths 104 F Apr 15John W. Moore Today in Chem 104:
* Lecture: Titration; Lewis Acids and Bases
* Reading:
Kotz: Ch. 18, Sec. 3; Ch. 17, Sec. 9
Moore: Ch. 17, Sec. 2; Ch. 16, Sec.
* Homework #10 due by 11:55 PM tonight
Lewis Acids / Bases |
Titration / Volumetric Analysis
Introduction of Aquatic Chemistry in General Chemistry Curriculum;Spreadsheet Calculation ApproachesChulsung Kim Fundamental aquatic chemistry concepts may be introduced in general chemistry classes by computing ionization fractions and buffer intensity of aqueous phase carbonate systems. This Excel spreadsheet may used to build graphic presentations of a titration curve, distribution diagram, and buffer intensity as a function of pH. Accompanying activities are designed to enhance the concepts of acid-base equilibrium through exploring the relationship between pKa/pKb, pH of the solution, ionization fractions, and buffer intensity, and to exercise students graphing skills.
