In which of the following electrolysis, the composition of electrolyte is expected to remain constant under optimum conditions

Options

A. Aq. `AgNO_(3)` solution between Ag electrodes
B. Ag. `CuSO_(4)` solution between Pt electrodes
C. Fused NaCl between Pt electrodes
D. Aqueous `AgNO_(3)` solution between Pt electrodes.

Answer

A

Explanation

At anode: `Ag to Ag^(+) +e^(-)`
The composition of Ag in `AgNO_(3)` solution between Ag electrodes the composition of electrolyte remains constant.