Give three distinct tests [apart from using an indicator] you would carry out with solution of HCl to illustrate the typical properties of an acid.

Convert:

(a) Two soluble metallic nitrates to insoluble metallic chlorides.

(b) Insoluble iron(II) oxide to a soluble compound.

(c) Insoluble metal carbonate to a soluble chloride.

(d) Metal sulphide to an offensive smelling gas.

Study the figure given below and answer the questions that follow :

(i) Identify the gas Y.

(ii) What property of gas Y does this experiment demonstrate?

(iii) Name another gas which has the same property and can be demonstrated through this experiment.

Identify the gas evolved and give the chemical test in each of the following cases.

Dilute hydrochloric acid reacts with:

(i) Iron [II] sulphide.

(ii) Sodium sulphite.