A 0.2500 g sample of swimming pool oxidizer containing calcium hypochlorite as the active ingredient was dissolved in 0.50 M H2SO4 containing KI. The liberated iodine required 38.2 mL of Na2S2O3. The titrant was standardized by titrating 101.3 mg K2Cr2O7 dissolved in acid with the action of excess KI, which required 17.4 mL of the Na2S2O3. Calculate the % Ca(OCl)2 in the sample.

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A 0.2500 g sample of swimming pool oxidizer containing calcium hypochlorite as the active ingredient was dissolved in 0.50 M H₂SO₄ containing KI. The liberated iodine required 38.2 mL of Na₂S₂O3. The titrant was standardized by titrating 101.3 mg K₂Cr₂O₇ dissolved in acid with the action of excess KI, which required 17.4 mL of the Na₂S₂O₃. Calculate the % Ca(OCl)₂ in the sample.

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