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Given :

Co3+ + e → Co2+ ; E° = +1.81 V

Pb4+ + 2e → Pb2+ ; E° = +1.67 V

Ce4+ + e → Ce3+ ; E° = +1.61 V

 Bi3+ + 3e → Bi ; E° = +0.20 V

Oxidizing power of the species will increase in the order :

a)

Co3+ < Ce4+ < Bi3+ < Pb4+

b)

Co3+ < Pb4+ < Ce4+ < Bi3+

c)

Ce4+ < Pb4+ < Bi3+ < Co3+

d)

Bi3+ < Ce4+ < Pb4+ < Co3+



Question ID - 56401 | SaraNextGen Top Answer

Given :

Co3+ + e → Co2+ ; E° = +1.81 V

Pb4+ + 2e → Pb2+ ; E° = +1.67 V

Ce4+ + e → Ce3+ ; E° = +1.61 V

 Bi3+ + 3e → Bi ; E° = +0.20 V

Oxidizing power of the species will increase in the order :

a)

Co3+ < Ce4+ < Bi3+ < Pb4+

b)

Co3+ < Pb4+ < Ce4+ < Bi3+

c)

Ce4+ < Pb4+ < Bi3+ < Co3+

d)

Bi3+ < Ce4+ < Pb4+ < Co3+

1 Answer
127 votes
Answer Key / Explanation : (d) -

Greater the reduction potential, greater is the oxidising power.

So, Co3+ < Pb4+ < Ce4+ < Bi3+

127 votes


127