JEE Main 2026 Jan 21 Shift 2, Chemistry Q25: Electrochemical Cell And Nernst Equation

MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K

$MX(s)\rightleftharpoons M^{+}(aq)+X^{-}(aq);K_{sp}=10^{-10}$

If the standard reduction potential for $M^{+}(aq)+e^{-}\to M(s)$ is $\left(E_{M^{+}/M}^{\ominus }\right)=0.79$ V, then the value of the standard reduction potential for the metal/metal insoluble salt electrode $E_{X^{-}/MX(s)/M}^{\ominus }$ is __________ mV. (nearest integer)

$\left[\text{Given: }\frac{2.303RT}{F}=0.059\text{V}\right]$