Question

N the electrolysis of water,a)name the gas collected at anode and cathodeb)why is the volume of gas collected at one electrode double than the other?c)what would happen if dil h2so4is not added to water

Answer 1

a) At anode oxygen and at cathode hydrogen .
b) In water hydrogen and oxygen are present in ratio 2:1 so when we electrolyse the water we get the hydrogen double than oxygen.
c) Water needs good conductor of electricity to form ions. So by adding acid to it ions are produced .

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.