Using the standard electrode potential,

Question:

 Using the standard electrode potential, find out the pair between which redox reaction is not feasible.

E°Values: Fe3+/ Fe2+ = +0.77; I2/I- = +0.54;

Cu2+/ Cu = -0.34; Ag+ /Ag = + 0.80 V

(i) Fe3+ and I-

(ii) Ag+ and Cu

(iii) Fe3+ and Cu

(iv) Ag and Fe3+

Solution:

Option (iv) Ag and Fe3+ is the answer.

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