The following questions are pertaining to various laboratory preparations

(a) Which property of hydrogen chloride is demonstrated by fountain experiment?

(b) Why hydrogen chloride gas is not collected over water?

(c) What is the source of nitrogen gas used in Haber's process?

Explain the following:

(a) Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by reducing a agent.

(b) During electrolysis of molten lead bromide, a graphite anode is preferred to other electrodes.

(c) Electrolysis of molten lead bromide is considered to be a redox reaction.

(a) Jiya was doing an experiment in which she had to dry up ammonia, but she observes that the concentrated sulphuric acid is not able to dry ammonia gas. Why is it so?

(b) Give the balanced chemical equation for the conversion of ammonia solution to an amphoteric hydroxide

Name the gas evolved when the following reaction takes place.

(a) Dilute hydrochloric acid to zinc sulphide.

(b) Zinc sulphide ore is heated in a regular supply of air.