A 0.3674 g powdered milk sample was analyzed for calcium by igniting in a crucible at 1000°C, the ash dissolved in dilute HCI, and the solution buffered to pH 10. A titration with an EDTA solution required 15.62 mL of EDTA. The EDTA was standardized by titrating a 10.00 mL aliquot of a solution containing 500.0 mg Zn/L. This titration required 9.81 mL of EDTA. What is the mg% of calcium in the powdered milk?
A 0.3674 g powdered milk sample was analyzed for calcium by igniting in a crucible at 1000°C, the ash dissolved in dilute HCI, and the solution buffered to pH 10. A titration with an EDTA solution required 15.62 mL of EDTA. The EDTA was standardized by titrating a 10.00 mL aliquot of a solution containing 500.0 mg Zn/L. This titration required 9.81 mL of EDTA. What is the mg% of calcium in the powdered milk?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 2.1ACP: Excess KI is added to a 100.0-mL sample of a soft drink that had been contaminated with bleach,...
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