One faraday of electricicy is passed through aqueous solution of sodium chloride. It produces

Options

A. one mole of oxygen at anode
B. 1gm of hydrogen at cathode
C. neighter hydrogen nor oxygen is produc ed
D. sodium is deposited at cathode in equivalent proportion.

Answer

B

Explanation

In electrolysis of `NaCl,Na^(+)&H^(+)` compete at cathode. As reduc tion potential of H is less it gets liberated
`H^(+)+e^(-)rarr1/2 H_(2)`(i.e. 1g)