Q.

To deposit 0.6354 g of copper by electrolysis of aqueous cupric sulphate solution, the amount of electricity required (in coulombs) is

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a

1930

b

4825

c

3860

d

9650

answer is A.

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Detailed Solution

Cu+++2e−→CuECu=63.542=31.77Amount of electricity required to deposit 0.6354 gm of Cu                        =6500×0.635431.77=1930 C
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To deposit 0.6354 g of copper by electrolysis of aqueous cupric sulphate solution, the amount of electricity required (in coulombs) is