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Question

10g fairly concentrated solution of CuSO4 is electrolysed using 0.01 faraday of electricity. The number of equivalents of acid or alkali in solution.
[Atomic mass of Cu=63.5]

A
0.01eq. of H+
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B
0.21eq. of H+
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C
0.11eq. of H+
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D
None of these
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Solution

The correct option is D 0.01eq. of H+
Half cell reaction :

2H2OO2+4H++4e

From the reaction,
4 faraday of electriity will produce 4 equivalent of acid or H+ ions
Thuss, 1 faraday of electriity will produce 1 equivalent of acid or H+ ions.
0.01 faraday will produce = 0.01eq. of H+
Thus, when 10 g fairly concentrated solution of CuSO4 is electrolysed using 0.01 faraday of electricity, the number of equivalents of hydrogen ions formed is 0.01eq.

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