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Grade: 12th pass
        
Given standard electrode potentials 
(Fe2+) + (2e-) ------------>Fe, E= -0.440V
(Fe3+) + (3e-) ------------>Fe, E=-0.036V
The standard electrode potential(E) for 
(Fe3+) + (e-) ------------->(Fe2+) is
 
(a) – 0.476V                (b) – 0.404V
(ć) +0.404V                 (d)  +0.771V
one year ago

Answers : (1)

Wassim bhatt
18 Points
							
Option d is the correct one. You cant add the potentials directly because EMF is the intensive property. So calculate the gibbs free energy values for all the three reactions and use G3 =G2-G1, you will get the value equal to 0.772v
 
one year ago
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