JEE Main20202 Sep 2020Morning ShiftChemistryThermodynamics (C)Actual
The Gibbs energy change (in J ) for the given reaction at Cu 2 + = Sn 2 + = 1  M and 298 K is : Cu s + Sn 2 + aq . → Cu 2 + aq . + Sn s ; E Sn 2 + Sn 0 = − 0 .16   V ,   E Cu 2 + Cu 0 = 0 .34   V , Take F = 96500   C   mol − 1
Correct answer
96500
Step-by-step solution
E cell  0 = E Sn 2 + / Sn 0 - E Cu 2 + / Cu 0 = - 0 . 16 - 0 . 34 = - 0 . 50 V Δ G 0 = - nFE cell 0 = - 2 × 96500 × ( - 0 . 5 ) = 96500   J = 96 . 5   KJ = 96500   J