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pl answer Q 10

C

_{6}H

_{5}NO

_{2}+ 6H

^{+}+ 6e

^{-}$\to $C

_{6}H

_{5}NH

_{2}+ 2 H

_{2}O

Molar mass of Nitrobenzene = 123 g

123 g of nitrobenzene use 6 moles electron for complete reduction.

So 12.3 g of nitobenzene would use = 6/123 x 12.3 = 0.6 mole electrons

Amount of charge in 0.6 mole electron = 0.6 x 96500 = 57900 C

But the efficiency of current is 50 % so it would require twice amount of charge

Therefore the amount of charge required = 57900 x 2 = 115800 C.

So, the correct option is a)

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