A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

A mixture of potassium chlorate ,oxalic acid and sulphuric acid is heated.determine the reaction which element undergoes maximum change in the oxidation number?

State with balanced equation what happens when ? (a) Potassium ferrocyanide is heated with conc. H_2 SO_4 . (b) A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. (c) Sodium chlorate reacts with sulphur dioxide. (d) Chlorine gas is passed into water saturated with hydorgen sulphide. (e) Hydrogen sulphide is passed through sodium bisulphite solution.

Why is sulphuric acid not during the reaction of alcohols with KI?