Standard electrode potentials of few half-cell reactions are given below: MnO 4 – + 8H + + 5 e – → Mn 2+ + 4H 2 O; E ° = 1.51 V Cr 2 O 7 2– + 14H + + 6 e – →2Cr 3+ + 7H 2 O; E ° = 1.33 V Fe 3+ + e –…

Question

Standard electrode potentials of few half-cell reactions are given below:
MnO₄^– + 8H⁺ + 5e^– → Mn²⁺ + 4H₂O; E° = 1.51 V
Cr₂O₇^2– + 14H⁺ + 6e^– →2Cr³⁺ + 7H₂O; E° = 1.33 V
Fe³⁺ + e^– → Fe²⁺; E° = 0.77 V
Cl₂ + 2e^– → 2Cl^–; E° = 1.36 V
Based on the above information match the column I with column II and mark the appropriate choice.

Column I		Column II
(A)	1 mol of MnO₄^– to Mn²⁺	(i)	579000 C
(B)	1 mol of Cr₂O₇^2– to 2Cr³⁺	(ii)	193000 C
(C)	1 mol of Fe³⁺ to Fe²⁺	(iii)	482500 C
(D)	1 mol of Cl₂ to 2Cl^–	(iv)	96500 C

Accepted Answer

(C) (A) → (iii), (B) → (i), (C) → (iv), (D) → (ii)

Standard electrode potentials of few half-cell reactions are given below: MnO 4 – + 8H +…

Answer

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