For the galvanic cellZns Cu2 002 M Zn2 004 M CusEcell x 102

Question

For the galvanic cell,Zn(s) + Cu^(2+) (0.02 M) -> Zn^(2+) (0.04 M) + Cu(s),E_(cell) = ______________ x 10^(-2) V. (Nearest integer)[Use : E_Cu/Cu^2 + ^0 = - 0.34 V, E_Zn/Zn^2 + ^0 = + 0.76 V, 2.303RT / F = 0.059 V]

DivineJEE · Accepted Answer

Galvanic cell :Zn_(s) + mathop Cu_(aq.)^ + 2limits_0.02 M -> mathop Zn_^ + 2limits_0.04 M + Cu(s)Nernst equation = F_cell = E_cell^o - 0.059 / 2log [2n^ + 2] / [Cu^ + 2] => E_cell[ E_cell^o - E_Zn^ + 2/Zn^o ] - 0.059 / 2log 0.04 / 0.02 => E_cell[0.34 - ( - 0.76)] - 0.059 / 2log ^2 => E_cell1 - 1 - 0.059 / 2 x 0.3010= 1.0911 = 109.11 x 10^(-2)= 109

Explanation

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