Question

in electrolysis of water why is the volume of gas collected over 1 electron double that of a gas collected over the other electron

Answer 1

Because when two mole of hydrogen react with oxygen To form water 2h2o. So hidrogen has two mole which is double

Answer 2

Overall equation for electrolysis of water can be written as :-

H2O - - - - - - > H2 + O2

Now after balancing the equation we will get :

2H2O - - - - - - - > 2H2 + O2

From this we can conclude that when two mole of water is electrolysed (dissociated), two mole of hydrogen gas and one mole of oxygen gas is produced.

I hope it will help u...