The following questions are based on the preparation of ammonia gas in the laboratory:

(i) Explain why ammonium nitrate is not used in the preparation of ammonia.

(ii) Name the compound normally used as a drying agent during the process.

(iii) How is ammonia gas collected? Explain why it is not collected over water.

Name the gas produced when excess ammonia reacts with chlorine.

State one appropriate observation for : Excess of chlorine gas is reacted with ammonia gas.

Rewrite the correct statement with the missing word/s — Magnesium nitride reacts with water to liberate ammonia.