TM equations

Question 1

Catalysed alternative route of reaction (S2O8)2- + 2I- –> (2SO4)2- + I2 catalysed by Fe2+

Answer 1

S2O82- + 2Fe2+ –> 2SO42- + 2FFe3+

2I- + 2Fe3+ –> 2Fe2+ + I2

Question 2

Write two equations to show how Mn2+ is an autocalayst in

2MnO4– + 16H+ + 5C2O42– –> 2Mn2+ + 8H2O + 10CO2

Answer 2

MnO4- + 8H+ + 4Mn2+ –> 5Mn3+ + 4H2O

2Mn3+ + C2O42- –> 2Mn2+ + 2CO2