Question

The quantity of electricity required to liberate

Answer 1

The quantity of electricity required to liberate 112 cc hydrogen at S.T.P from acidified water is_________.

Answer:

2H

+

+ 2e

−

→ H

2

2 F is required to liberate 22.4 L of H

2

gas;

1000cc = 1L

112 cc = 0.112 L

for 22.4 L we require 193000 C of charge, ( 1F = 96500 C )

so, 0.112 L we require charge =

22.4

193000∗0.112

Hence, the quantity of charge required = 965C