Question

Write the equation of the reactions which take place at the cathode and anode when acidified water is electrolysed.

Answer 1

Cathode reaction : $2H^{+}+2e^{-}\to 2H\to H_2$
Anode reaction : $2O{H}^{-}-2e^{-}\to 2OH\to H_{2}O+O+O\to O_2$