Question

How much h2 in grams will be liberated if 1f electricity is passed through acidified water

Answer 1

Hey dear,

◆ Answer- 1 g H2

◆ Solution-

In acidified water, hydrogen is iberated at cathode by reaction-

2H+ + 2e- ---> H2

Two moles of e- are required to liberate 1 mole of H2.

Here, 1 F gives 1 mol of e- which will liberate 1/2 mol of H2.

Weight of H2 = Molecular mass × no of moles

Weight of H2 = 2 × 1/2

Weight of H2 = 1 g.

Hope this helps yoy...

Answer 2

1 g hydrogen.





ANSWER IS CORRECT