How many coulombs are required in order to reduce 12.3 g of nitrobenzene to niline ?

Options

A. 115800 C
B. 5790 C
C. 28950 C
D. 56900 C

Answer

D

Explanation

`C_(6)H_(5)NO_(2) + 6H^(+) + 6e^(-) to C_(6)H_(5)NH_(2) + 2H_(2)O`
1 mole of nitrobenzene. (123g require 6 moles of electrons for reduction.
`12.3 g` requires = `6 xx 96500` Coulomb
12.3 g requires `(6 xx 96500)/123 xx 12.3 C = 57900` C