ERIC Number: EJ755008
Record Type: Journal
Publication Date: 2006-Dec
Pages: 4
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Determination of Acidity Constants by Gradient Flow-Injection Titration
Conceicao, Antonio C. L.; Minas da Piedade, Manuel E.
Journal of Chemical Education, v83 n12 p1853 Dec 2006
A three-hour laboratory experiment, designed for an advanced undergraduate course in instrumental analysis that illustrates the application of the gradient chamber flow-injection titration (GCFIT) method with spectrophotometric detection to determine acidity constants is presented. The procedure involves the use of an acid-base indicator to obtain the relation between the pH and the absorbance of the solution throughout the titration which constitutes a new approach to the determination of p[K[subscript a]]'s by GCFIT.
Descriptors: Laboratory Experiments, Chemistry, Science Education, Science Experiments, College Science, Undergraduate Study, Laboratory Equipment, Spectroscopy, Measurement Techniques
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://jchemed.chem.wisc.edu/
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A