Give equations for the action of sulphuric acid on —

(i) Potassium hydrogen carbonate.

(ii) Sulphur

In the manufacture of sulphuric acid by the Contact process, give the equations for the conversion of sulphur trioxide to sulphuric acid.

What property of conc. H₂SO₄ is made use of in each of the following cases? Give an equation for the reaction in each case:

(a) in the production of HCl gas when it reacts with a chloride,

(b) in the preparation of CO from HCOOH.

(c) as a source of hydrogen by diluting it and adding a strip of magnesium.

(d) in the preparation of sulphur dioxide by warming a mixture of conc. sulphuric acid and copper-turnings.

(e) hydrogen chloride gas is passed through concentrated sulphuric acid.

(f) it's reaction with (i) Ethanol (ii) Carbon.

(a) Which property of sulphuric acid accounts for it's use as a dehydrating agent?

(b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write one equation each to illustrate the above mentioned properties of sulphuric acid.