Question

WHY IS CALCIUM HYDROXIDE USED IN THE LABORATORY PREPARATION OF AMMONIA?

Answer 1

Ammonia (NH3) is an important compound of nitrogen and hydrogen. It is produced by the natural decomposition of animal and vegetable bodies. The death and decay of plants and animals cause the nitrogen compounds present in them to get decomposed, giving ammonia. Ammonia also occurs in the soil in the form of ammonium salts.Preparation of AmmoniaAmmonia is prepared by the following methods:From ammonium chloride

Ammonia gas is usually prepared in the laboratory by gently heating ammonium chloride (NH4Cl) and slaked lime [Ca(OH)2].

Answer 2

NH3 i.e, ammonia has high affinity towards water and is soluble in water. Calcium hydroxide gets converted to calcium oxide which absorbs moisture and helps in extracting ammonia in its dried form.