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The equilibrium constant for the reaction Zn s + Sn 2 + aq ⇌ Zn 2 + aq + Sn s is 1 × 10 20 at 298 K . The magnitude of standard electrode potential of Sn / Sn 2 + if E Zn 2 * / Zn 0 = - 0 . 76 V is _____ × 10 - 2 V . (Nearest integer) Given : 2 . 303 RT F = 0 . 059 V

Correct answer

0

Step-by-step solution

Zn s + Sn 2 + aq ⇌ Zn 2 + aq + Sn s Given: 2 . 303 RT F   =   0 . 059   V E cell 0   =   2 . 303 RT 2 F   log   K c ⇒   E cell 0   =   0 . 059 2   log   ( 10 20 ) ⇒   E cell 0   =   0 . 059 2   ×   20 ⇒   E cell 0   =   0 . 59   V E cell 0   =   E Sn 2 + / Sn 0   -   E Zn 2 + / Zn 0 ⇒   E cell 0   =   E Sn 2 + / Sn 0   -   ( - 0 . 76

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