2009 (1) Given : E_(〖Fe〗^(3+)/Fe)^° = - 0.036V; E_(〖Fe〗^(2+)/Fe)^° = - 0.439 V

Given : E_(〖Fe〗^(3+)/Fe)^° = - 0.036V;
E_(〖Fe〗^(2+)/Fe)^° = - 0.439 V
The value of standard electrode potential
for the change,
〖Fe〗^(3+) (aq) + e^- → 〖Fe〗^(2+) (aq)
will be [AIEEE 2009]
(1) - 0.072 V
(2) 0.385 V
(3) 0.770 V
(4) 0.270