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The cell potential for Zn Zn 2 + ( aq ) ‖ Sn x + Sn is 0 . 801 V at 298 K . The reaction quotient for the above reaction is 10 - 2 . The number of electrons involved in the given electrochemical cell reaction is _____ . (Given E Zn 2 + ∣ Zn 0 = - 0 . 763 V , E Sn x + | Sn 0 = + 0 . 008 V and 2 . 303 RT F = 0 . 06 V )

Correct answer

0

Step-by-step solution

E = E 0 - 2 . 303 RT nF logQ Here, E = + 0 . 801   V E 0 = E Cathode ∘ - E Anode ∘ Both   are   SRP   values E 0 = 0 . 008 - - 0 . 763 = + 0 . 771   V ∴ 0 . 801 = + 0 . 771 - 0 . 06 n log 10 - 2 ⇒ n = 4

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