Question

(a) Of the two gases ammonia and hydrogen chloride, which is more dense. name the method of collection of this gas.
(b) Give one example of a reaction between the above two gases which produces a solid compound.

Answer 1

(a) Hydrogen chloride is denser than ammonia and it is collected by the upward displacement of air.
(b) When ammonia gas comes in contact with hydrogen chloride gas, it yields dense white fumes of ammonium chloride.

HCl (g) + NH₃ (g) → NH₄Cl(s)