Write balanced chemical equations for the following :

(a) Sodium thiosulphate is reacted with dilute hydrochloric acid.

(b) Calcium bicarbonate reacts with dilute hydrochloric acid.

(c) Conc. hydrochloric acid and potassium permanganate solution.

(d) Action of dilute hydrochloric acid on sodium sulphide.

(e) Action of hydrochloric acid on sodium bicarbonate.

Give balanced equations with conditions, if any, for the following conversions A to D.

A : Sodium Chloride ⟶ Hydrogen Chloride

B : Hydrogen Chloride ⟶ Iron (II) chloride

C : Hydrogen Chloride ⟶ Ammonium chloride

D : Hydrogen Chloride ⟶ Lead chloride.

Explain why when the stopper of a bottle full of hydrogen chloride gas is opened there are fumes in the air

Explain why a solution of hydrogen chloride in water turns blue litmus red and conducts electricity, while a solution of the same gas in toluene

(i) has no effect on litmus, and

(ii) does not conduct electricity.