(a) What is the percentage of MnO, in a pyrolusite ore if a sample weighing 0.4000 g is treated witha 0.6000 g of pure H2C2O4.2H20 and dilute H,SO4 and after reduction has taken place(MnO2 + H2C204 + 2H* → Mn2+ + 2CO, + 2H,O), the excess oxalic acid requires 26.26 mL of0.1000 N KMnO4 for titration? (b) If pure As,03 were used instead of oxalic acid, how many gramswould be required in order for the other numerical data to remain the same?

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(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a 0.6000 g of pure H,C,O4.2H2O and dilute H,SO4 and after reduction has taken place (MnO2 + H2C204 + 2H* → Mn2+ + 2CO2 + 2H,O), the excess oxalic acid requires 26.26 mL of 0.1000 N KMnO4 for titration? (b) If pure As,O, were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?

(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a 0.6000 g of pure H,C,O4.2H2O and dilute H,SO4 and after reduction has taken place (MnO2 + H2C204 + 2H* → Mn2+ + 2CO2 + 2H,O), the excess oxalic acid requires 26.26 mL of 0.1000 N KMnO4 for titration? (b) If pure As,O, were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?

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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