Question

reactivity difference between fe(ox)3 3- and fe(h2o)6 3+ when reacting with KI and Dichromate Equation Eo...

reactivity difference between fe(ox)3 3- and fe(h2o)6 3+ when reacting with KI and Dichromate

Equation Eo Value
I2 + 2e- = 2I- 0.54V
[Fe(H2O)6]3+ + e- = [Fe(H2O)6]2+ 0.77V
[Fe(C2O4)3]3-  + e- = [Fe(C2O4)2]-   + C2O42- 0.02V
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Answer #1

The more negative E0 value represents that is more reactive. Remember Lithium metal placed top on electro chemical series (also called as Standard reduction potential -SRP) since its E0 value is more negative and is highly reactive. In this way fe(ox)3 3- is more reactive than fe(h2o)6 3+.

Answer: [Fe(C2O4)3]3-  + e- = [Fe(C2O4)2]-   + C2O42- is more reactive when reacting with KI and Dichromate

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