Question

Question 10

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

(i) Displacement reaction
(ii) Precipitation reaction
(iii) Combination reaction
(iv) Double displacement reaction

(a) (i) only
(b) (ii) only
(c) (iv) only
(d) (ii) and (iv)

Answer 1

Option (d) is correct.

It is a double displacement reaction since it involves exchange of ions as follows:

${\text{BaCl}}_2\text{(aq)}+{\text{(NH}}_4{)}_2{\text{SO}}_4\text{(aq)}\to {\text{BaSO}}_4\text{(s)}\downarrow +2{\text{NH}}_4\text{Cl(aq)}$

It is also a precipitation reaction due to the formation of white precipitate of barium sulphate.