Question

Electrolysis of water is a decomposition reaction. The molar ratio of hydrogen and oxygen gases liberated during electrolysis of water is [NCERT Exemplar Problems]
(a) 1 : 1
(b) 2 : 1
(c) 4 : 1
(d) 1 : 2

Answer 1

hey user !

Answer:

2:1

Explanation:

The reaction for the dissociation of water(electrolysis) is:

2H 2 O(l)→2H 2 (g)+O 2 (g)

As shown in the equation, the number of hydrogen molecules produced is twice the number of oxygen molecules. Therefore, the mole ratio of hydrogen and oxygen gas liberated is 2:1.

Answer 2

Answer:

Option B....

Explanation:

In  $H_{2}O$ ,

Hydrogen has two molecules &

Oxygen has one molecule

So option b.... 2:1