Question
Explain the catalytic action of Fe(III) between the reaction of I– and persulphate ion S2O82–.
Solution
Reaction involved between I– ion and persulphate ion is
The mechanism of the reaction with Fe(III) as catalyst is
3Fe3+ + 2I– → 2Fe2+ + I2
2Fe2+ + S2Og2 → Fe3+ + 2SO42–
The mechanism of the reaction with Fe(III) as catalyst is
3Fe3+ + 2I– → 2Fe2+ + I2
2Fe2+ + S2Og2 → Fe3+ + 2SO42–