To adjust the thiosulfate (S2O3) solution to be used as a titrant in the copper determination, excess KI was added to exactly 25.0 mL of 5.68 x 103 M KIO3 solution to liberate iodine (12) and 16.4 mL of thiosulfate solution is being consumed in the titration of I2. In this standardization process, the concentration of the thiosulfate solution is calculated. 103 +51 (excess)+ 6H*→ 31z+ 3H2O Iz+ 2S2032→ S402²-+21 Then, for copper determination 25.0 mL of 250 mL copper-aliquots is taken and treated with excess KI. Cu²++ 21 (excess)→ Cul + % l2 The liberated l2 was titrated with the 8.2 mL of adjusted thiosulfate solution (S2O32-). I2+ 2S2032> S4O,²+21- Calculate, how many milligrams of copper is found in the sample? (Cu: 63.5 g/ mol)

To adjust the thiosulfate (S2O3) solution to be used as a titrant in the copper determination, excess KI was added to exactly 25.0 mL of 5.68 x 103 M KIO3 solution to liberate iodine (12) and 16.4 mL of thiosulfate solution is being consumed in the titration of I2. In this standardization process, the concentration of the thiosulfate solution is calculated. 103 +51 (excess)+ 6H*→ 31z+ 3H2O Iz+ 2S2032→ S402²-+21 Then, for copper determination 25.0 mL of 250 mL copper-aliquots is taken and treated with excess KI. Cu²++ 21 (excess)→ Cul + % l2 The liberated l2 was titrated with the 8.2 mL of adjusted thiosulfate solution (S2O32-). I2+ 2S2032> S4O,²+21- Calculate, how many milligrams of copper is found in the sample? (Cu: 63.5 g/ mol)

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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