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Question

The quantity of electricity required to reduce 12.3 g of nitro benzene to aniline assuming 50% current efficiency is:


A
115800 C
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B
57900 C
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C
231600 C
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D
28950 C
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Solution

The correct option is A 115800 C
Reaction for reduction :

C6H5NO2+6H++6eC6H5NH2+2H2O

Given, molar mass of C6H5NO2=123

Here, 12.3 g nitrobenzene mole =6×12.3123=0.6

Charge =0.6×96500 coloumbs
=57900

Efficiency =50%

2×57900= coloumbs

charge required is 115800 coloumbs.

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