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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > October  >
In the Laboratory
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
A. R. Smith Department of Chemistry, Appalachian State University, Boone, NC 28608
Cover
October 2004
Vol. 81 No. 10
p. 1479
Abstract
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. Lab time is two–three hours.
Supplement
A student laboratory handout, including procedures, sample calculations, and data sheets, and notes for the instructor, including solution preparation and laboratory setup, are available.
*  Contents JCE2004p1479W.doc (Microsoft Word)
 
*  Download



 
More Information
*  Citation
 Sigmann, Samuella B.; Wheeler, Dale E. J. Chem. Educ. 2004 81 1479.
*  Keywords
 Analytical Chemistry; Aqueous Solution Chemistry; Consumer Chemistry; Food Science; General Chemistry; Introductory / High School Chemistry; Laboratory Instruction; Quantitative Analysis; Titration / Titrimetry
*  History
 Created:
Last Updated:		 August 31, 2004
September 8, 2004
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