Give equations for the action of sulphuric acid on —

(a) Potassium hydrogen carbonate.

(b) Sulphur

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

State your observations when:

(i) Barium chloride soln. is mixed with sodium sulphate soln.

(ii) Concentrated sulphuric acid is added to sugar crystals.

A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.

A: Typical acid property

B: Non-volatile acid

C: Oxidizing agent

D: Dehydrating agent

Choose the property [A, B, C or D] depending on which is relevant to each of the following:

(i) Preparation of hydrogen chloride gas.

(ii) Preparation of copper sulphate from copper oxide.

(iii) Action of conc. sulphuric acid on sulphur.