Question

An electrolytic cell is set up using two platinum electrodes and an aqueous solution of copper[II]sulphate. Name the spectator ions in the solution.

Answer 1

• Sulfate ions${{\mathrm{SO}}_4}^{-2}$ are the spectator ions in the solution. because, they do not change in the reaction.

Spectator ions

• The spectator ions are the ions which do not participate in chemical reactions but present the same on both sides of the reactions
• In the net chemical reaction, the spectator ions are cancelled from both sides of the equation.
• It may be either cations or anions.
• The ion is unchanged on both sides of the reaction.