Question

Give reason:

Acidulated water is used for electrolysis.

Answer 1

Electrolysis:

• Electrolysis of acidulated water is considered to be an example of catalysis.
• Pure water is not a good conductor of electricity, but when acid is added it catalyzes the ionization of water, and water is dissociated into ${\mathrm{H}}^{+}$and ${\mathrm{OH}}^{-}$ions.
• $\underset{\mathrm{water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\stackrel{\mathrm{electricity}}{\to }\underset{\mathrm{hydrogen}}{2{\mathrm{H}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}$