Question

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

Answer 1

Answer:

As we know that the reaction of electrolysis of water :

2$H_{2} O_{}$ ⇒$2H_{2}$ + $O_{2}$

THEREFORE FROM THIS EQUATION ONLY WE CAN SAY THAT 2 MOLECULE OF $H_{2}$ AND 1 MOLECULE OF $O_{2}$ IS FORMED

SO WHEN IT BREAKS INTO SIMPLER FORM IT

WE GET THE VOLUME OF HYDROGEN GAS COLLECTED OVER ONE ELECTRODE DOUBLE THAT OF THE OTHER ELECTRODE.

Explanation:

Answer 2

in electrolysis of water the volume of gas collected over one electrode is double that of the other electrode as the composition of water is H2O which means two particle of Hydrogen and one Particle of Oxygen. While electrolysis in Anonde the Hydrogen molecules come out whereas in Cathode the Oxygen molecules come out. As in the composition Hydrogen molecule is double that of Oxygen. So the above changes happen.

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