During the electrolysis of molten sodium chloride, the time required to produce `0.10 mol` of chlorine gas using a current of `3` amperes is

Options

A. 55 min.
B. 110 min.
C. 220 min.
D. 330 min.

Answer

B

Explanation

`2 Na^(2+) + 2 Cl^(-) to 2 Na + Cl_(2)`
Amount of `Cl_2` produced = `0.1 xx 71 = 7.1g`
71 g of `Cl_2` is produced by electricity = ` 2 xx 96500 C `
7.1 g of `Cl_(2)` is produced by electricity = `(2 xx 96500)/(71) xx 7.1`
= 19300 C
Now , quantity of electricity Q = `I xx t`
`19300 C = 3 xx t`
`t = (19300)/(3) = 6433.3 s`
=107.2 min = 110 min.