A layer of chromium metal 0.25mm thick is to be plated on an auto bumper with a total area of 0.32m2 from a solution containing CrO2−4. What current flow is required for this electroplating if the bumper is to be plated in 60s? The density of chromium metal is 7.20g/cm3.
4.9×103A
1.78×103A
10.69×104A
5.3×104A
A
1.78×103A
B
10.69×104A
C
4.9×103A
D
5.3×104A
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Solution
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Total volume of metal layer =0.25×0.32×10−3 ⇒0.08×10−3m3
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Q1
A layer of chromium metal 0.25mm thick is to be plated on an auto bumper with a total area of 0.32m2 from a solution containing CrO2−4. What current flow is required for this electroplating if the bumper is to be plated in 60s? The density of chromium metal is 7.20g/cm3.
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Q2
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Q4
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Q5
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