The amount of chlorine evolved by passing 2 A of current in an aqueous solution of NaCI for 30 minutes is

Options

A. 2.64 g
B. 1.32 g
C. 3.62 g
D. 4.22 g

Answer

B

Explanation

NaCl `to Na^+ + Cl^-`
`2Cl^(-) + 2e^(-) to Cl_2`
Q = I x t = 2 x 30 x 60 = 3600 Coulombs
2 x 96500 Coulombs produce = 71 g of `Cl_2`
3600 Coulombs will produce =`71/(2xx96500)xx3600`
=1.32 g of `Cl_2`