Chemistry - Electrochemistry Question with Solution | TestHub

Question Explanation:

Comparing electrolysis results between inert and reactive electrodes.

Concept:

Active vs. Inert Electrodes

Solution:

Using inert Pt electrodes, ions are removed from solution at both ends. With reactive Ag electrodes, Ag dissolves at the anode, replenishing/increasing concentration there, while reduction continues to lower concentration at the cathode.

Cathode (Reduction): ${\mathrm{Ag}}^{+}+{\mathrm{e}}^{-}\to \mathrm{Ag}$ (Concentration falls from 4M to 3M).

Anode (Oxidation): $\mathrm{Ag}⟶{\mathrm{Ag}}^{+}+{\mathrm{e}}^{-}$(Concentration increases from 4M to 5M).

Final Answer: Option (B)