Question

Give the chemical reaction of electrolysis of water.

Answer 1

When electric current passes through acidulated water it dissociates into constituent ions. ${\mathrm{H}}^{+}$deposited at the cathode and ${\mathrm{OH}}^{-}$ deposited at the anode.

$\underset{\mathrm{Acidulated}\mathrm{water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\stackrel{\mathrm{Electric}\mathrm{current}}{\to }\underset{\mathrm{At}\mathrm{cathode}}{{\mathrm{H}}^{+}\left(\mathrm{aq}\right)}+\underset{\mathrm{At}\mathrm{anode}}{{\mathrm{OH}}^{-}\left(\mathrm{aq}\right)}$