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b. 4f is the answer. ..ok
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C6 H5 NO2 + 6H+ + 6e- → C6 H5 NH2 + 2H2 O
Molecular mass of nitrobenzene is 123.
We know that 1g of hydrogen is liberated from 96500 C.
Thus for 6g Hydrogen, the charge required will be 6 * 96500 C
As 1 faraday charge= 96500 C
Therefore, to convert 123 g nitrobenzene to aniline, 6 faraday charge is required.
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