MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K . MX(s) ⇌ M^{+}(aq)+X^{-}(aq) ; K_{sp}=10^{-10} If the standard reduction potential for M ^{+}( aq )+ e ^{-} \rightarrow M ( s ) is ( E _{ M ^{+} \/ M }^{⊖}) =0.79 V, then the value of the standard reduction potential for the metal/metal insoluble salt electrode E _{ X ^{-} \/ MX ( s ) \/ M }^{⊖} is \_\_\_\_ mV. (nearest integer) [Given: \frac{2.303 R T}{F}=0.059 V ] [21 Jan 2026 Shift 2]

JEE Main 21 Jan 2026 Shift 2 Paper Solved Paper

Section: Chemistry

Question : 75 of 75

Marks: +1, -0

MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K .
MX(s)⇌M+(aq)+X−(aq);‌‌Ksp=10−10 If the standard reduction potential for M+(aq)+e−⟶M(s) is (EM+∕M⊖)=0.79V, then the value of the standard reduction potential for the metal/metal insoluble salt electrode EX−∕MX(s)∕M⊖ is ____ mV. (nearest integer)
[Given: ‌

2.303RT

=0.059V ]

[21 Jan 2026 Shift 2]

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