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MHT CET Chemistry question

ChemistryElectrochemistryMHT CET

What is the current efficiency of an electro-deposition of Cu metal from solution in which 9.80 g copper is deposited by the passage of 5 A current for 2 h ?

Answer: (B)

Solution

Charge = 5 × 7200 = 36000 C, so the theoretical mass of Cu = (63.5/2) × 36000/96500 = 11.84 g; efficiency =

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Question ID VK-066924