6) Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below. If a current of 6.0A and a voltage of 4.5V are used: Cr207' (aq) + 14H* (ag)+ 12e¯→ 2Cr(s) + 7H20 a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

6) Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below. If a current of 6.0A and a voltage of 4.5V are used: Cr207' (aq) + 14H* (ag)+ 12e¯→ 2Cr(s) + 7H20 a) How many hours would it take to completely convert 215mL of 1.25M K2Cr2O7 to elemental chromium? b) How many kilowatt-hours of electrical energy are required to plate 1.00 g of chromium?

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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Question

100%

6) Chromium can be electroplated from aqueous potassium dichromate, with the
reduction shown below. If a current of 6.0A and a voltage of 4.5V are used:
Cr20,
Cr207" (aq)
+ 14H* (ag)+ 12e¯ → 2Cr(s) + 7H20
a) How many hours would it take to completely convert
215mL of 1.25M K2Cr207 to elemental chromium?
b) How many kilowatt-hours of electrical energy are
required to plate 1.00 g of chromium?

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