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Quantitative Determination of Citric and Ascorbic Acid in Powdered Drink Mixes: A High School or General Chemistry Experiment
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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.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
Analytical ChemistryKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Acids / BasesCiting Articles
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This article has been cited by 4 ACS Journal articles (4 most recent appear below).
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Allan R. PinhasJournal of Chemical Education2010 87 (9), 985-986Redox reactions and titrations are an important part of most general chemistry courses. A simplified redox titration that nursing students and other allied health students taking a general−organic−biochemistry (GOB) course find relevant has been ...
How Many Atomic Layers of Zinc Are in a Galvanized Iron Coating?
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Shui-Ping YangJournal of Chemical Education2007 84 (11), 1792This article describes an experiment using a novel gasometric assembly to determine the thickness and number of atomic layers of zinc coating on galvanized iron substrates. Students solved this problem through three stages. In the first stage, students ...
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History
- Received: August 03, 2009
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