Question

Write the equations for the reactions which take place at electrodes during the electrolysis of lead bromide.

Answer 1

• During electrolysis of Lead bromide,
• These are the following reactions that take place at cathode and anode :

At cathode :

${\mathrm{Pb}}^{2+}\left(aq\right)+2e^{-}\to Pb\left(l\right)$

Here, the Lead ions undergo reduction to form pure Lead.

At anode :

$2{\mathrm{Br}}^{-}\left(aq\right)-2e^{-}\to {\mathrm{Br}}_2\left(g\right)$

Here, the Bromide ions undergo oxidation to form Bromine.