Question

Explain th process , with suitable diagram ,to decompose water into Hydrogen and oxygen gasses by electrolysis of water.

Answer 1

Hey friend,

Electrolysis of acidified water...

Electrolyte -
Water acidified with dilute H2SO4.

Electrode -
Inert electrodes [platinum foil]

Reaction at Cathode - 
4H+  +  4e-  ---> 4H
2H + 2H  ---> 2H2

Reaction at Anode -
4OH-  -  4e-  ---> 4OH
4OH ---> 2H2O + O2

Observation at Cathode -
A colourless and odourless gas which extinguishes the burning splinter with a pop sound.

Observation at Anode - 
A colourless and odourless gas when brought in contact with the glowing splinter, splinter glows more brightly.

Note -
*The ratio of hydrogen and oxygen liberated at cathode and anode is 2:1 by volume.
*The current is passed for a longer time for the saturation of gases.

Hope it helps!