Calculate the standard cell potential of galvanic cell in which the following reaction take place :
Channel: Doubtnut
Date: 02/08/2020

Calculate the standard cell potential of galvanic cell in which the following reaction take place :  (Given `E_(OP)^(@)Cr, Cd, Fe^(2+), Ag` are `0.74V, 0.40V, -0.77V` and `-0.80V` respectively)   `(a) 2Cr_((s))+3Cd_((aq.))^(2+) rarr 2Cr_((aq.))^(3+)+3Cd`  (b) `Fe_((aq.))^(2+)+Ag_((aq.))^(+) rarr Fe_((aq.))^(3+)+Ag_((s))`   Calculate the `Delta_(r)G^(@)` and equilibrium constant of the reactions.