Q.

Copper can be deposited from acidified copper sulphate and alkaline cuprous cyanide. If the same current is passed for a definite time :

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a

None of the above

b

The amount of copper deposited from acidic copper sulphate will be higher

c

The same amount of copper will be deposited

d

The amount of copper deposited from alkaline cuprous cyanide will be higher 

answer is B.

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Detailed Solution

According faraday second law amount of substance deposit at respective electrode are in the ratio of their chemical equivalents. Cuprous having more equivalent weight than cupric 

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Copper can be deposited from acidified copper sulphate and alkaline cuprous cyanide. If the same current is passed for a definite time :