Question

In the electrolysis of water, a) Name the gas collected at anode and cathode b) Why is the volume of gas collected at one electrode double than the other? c) What would happen if dil H 2 SO 4 is not added to water?7

Answer 1

a)anode-Hydrogen
Cathode-oxygen

b)This is because hydrogen and oxygen are present in the ratio 2:1 in water.

c)Acid is added to increase the conductivity of water, so if it is not added, electricity will not be well conducted.

Answer 2

Answer:

In electrolysis of water :

a ) . Hydrogen gas collected at cathode. And oxygen gas gas collect at anode.

b ) . We know that in water there is 2 hydrogen atom and 1 oxygen atom. That's why volume of gas collected at one electrode double than the other.

c ) . Pure water is a bad conductor of electricity when we add drops of dil sulphuric acid we make it a good conductor of electricity.