Question

in electrolysis of water ,why is the volume of gas collected over electrode double than that of the gas collected over the other electrode?

Answer 1

Because during electrolysis the H2O present in will decomposes into 2H2 +O2 therefore the hydrogen bearing electrode will have more gas

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.