(a) How many coulombs are required to plate a layer ofchromium metal 0.25 mm thick on an auto bumper witha total area of 0.32 m2 from a solution containing CrO42-?The density of chromium metal is 7.20 g/cm3. (b) Whatcurrent flow is required for this electroplating if the bumperis to be plated in 10.0 s? (c) If the external source has anemf of +6.0 V and the electrolytic cell is 65% efficient,how much electrical power is expended to electroplate thebumper?

Given: Thickness of chromium metal= 0.25 mm Total area= 0.32 m2 Density of chromium metal= 7.20…

Answered: (a) How many coulombs are required to…

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) How many coulombs are required to plate a layer of
chromium metal 0.25 mm thick on an auto bumper with
a total area of 0.32 m2 from a solution containing CrO₄^2-?
The density of chromium metal is 7.20 g/cm³. (b) What
current flow is required for this electroplating if the bumper
is to be plated in 10.0 s? (c) If the external source has an
emf of +6.0 V and the electrolytic cell is 65% efficient,
how much electrical power is expended to electroplate the
bumper?

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