Statement I: Electrode potential of any electrode will change on changing any of its intensive prope — Electrochemistry Chemistry Question

💡 Solution & Explanation

\textbf{Assertion (I):} Electrode potential of any electrode will change on changing any of its intensive properties. \textbf{Reason (II):} Any intensive property of the system changes on changing any of its properties, whether intensive or extensive. \textbf{Analysis:} \textbf{Statement I:} By the Nernst equation: \[ E = E^\circ - \frac{RT}{nF}\ln Q \] Electrode potential depends on intensive properties such as temperature ($T$) and ion concentration (which determines $Q$). Changing temperature or concentration changes $E$. ✓ \textbf{Statement I is correct.} \textbf{Statement II:} An intensive property (like temperature, concentration, density, pressure) is independent of the quantity (amount/mass) of matter — it does NOT change when you add more of the same substance at the same state. For example, adding more water at 25°C does not change the temperature. Therefore, intensive properties do NOT change when extensive properties (like total mass or moles) change. ✗ \textbf{Statement II is incorrect.} \textbf{Answer: D} (Statement I correct, Statement II incorrect)