Question

in electrolysis of water why is the volume of gas collected over one electrode double that of the other electrode

Answer 1

as there are two mole of hydrogen and one mole of oxygen

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.