Physics JAMB

Calculate the mass of the copper deposited during electrolysis when a current of 4A passes through a copper salt for 2 hours. [Ece of Copper z=3.3×10^7kgC−¹]

A. 2.9×10^5kg
B. 9.5×10^-7kg
C. 9.5×10^-3kg
D. 2.9×10^4kg

Correct Answer:

Option C – 9.5×10^-3kg

Explanation

Mass = ZIT kg
Mass = 3.3 x 10^-7 x 4 x 2 x 60 x 60 kg
Mass = 9.5 x 10−³kg

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