ElectrochemistryMedium

Question

The following reactions represent the reduction of IO3− ion into I− ion in acidic and basic medium. Predict in which medium IO3− ion will act as a better oxidizing agent?

IO3− + 6H+ + 6e− → I− + 3H2O; E° = +0.907 V

IO3− + 3H2O + 6e− → I− + 6OH−; E° = +0.260 V

Options

A.Acid medium
B.Basic medium
C.Equally in both
D.Not predictable

Solution

For stronger oxidizing agent, reduction potential should be high.

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