(a) Write ionic and net ionic equations for Rb2Cr04 (aq) + Ca(NO3)2 (aq) -->(b) The active agent in many hair bleaches is hydrogen peroxide. The amount of H202 in hair bleach can bedetermined by titration with a standard permanganate solution:2 Mn04" (aq) + 5 H2O2 (aq) + 6 Ht (aq) --> SO2 (g) + 2 Mn2+ (aq) + 8 H20 (1).If 27.5 mL of H202 required 47.5 mL of 0.108 M MnO4¯ to reach the endpoint, what is the molarity of H2O2 inthe sample?

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(a) Write ionic and net ionic equations for Rb2CrO4 (aq) + Ca(NO3)2 (aq) -->

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

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Question

(a) Write ionic and net ionic equations for Rb2Cr04 (aq) + Ca(NO3)2 (aq) -->
(b) The active agent in many hair bleaches is hydrogen peroxide. The amount of H202 in hair bleach can be
determined by titration with a standard permanganate solution:
2 Mn04" (aq) + 5 H2O2 (aq) + 6 Ht (aq) --> SO2 (g) + 2 Mn2+ (aq) + 8 H20 (1).
If 27.5 mL of H202 required 47.5 mL of 0.108 M MnO4¯ to reach the endpoint, what is the molarity of H2O2 in
the sample?

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