Question

in the electrolysis of water .

(i) Name the gas collected at the cathode and anode .

(ii) why is the volume of gas collected one electrode double of other ?

(iii) why is afew drops of dilute H2SO4 added to the water?

Answer 1

cathode- H2 Gas'
anode-OGas
here in H2O Gas' the oxygen and hydrogen gas are taken in proportion of 1:2 hence Gas' produced at one electrode is double of other

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.