Electrolysis of water is a decomposition reaction. The mole ratio of

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is

  1. 1:1
  2. 2:1
  3. 4:1
  4. 1:2

Answer

The balance chemical equation for electrolysis of water is:

2 H2O (l) → 2 H2 (g) + O2 (g)

The correct option is B.