Question

Draw a labelled diagram and give balanced equation for the lab. Preparation of ammonia. Also state physical properties of ammonia.

Answer 1

Physical properties of ammonia are:
Color : Colourless
Odour : Strong, Pungent chocking smell
Taste: Slightly bitter (alkaline ) taste
Physiological action: Non-Poisonous
Density: V.D = 8.5 Lighter than air
Nature: Alkaline
Liquefaction: easily liquefied at 10°C by compressing it at 6 atm. Pressure
Boiling Point: Liquid ammonia boils at −33.5°C
Freezing Point: Solid NH3 melts at −77.7°C
Solubility: Highly soluble in water, 1vol of water dissolves about 702 vols. of ammonia at 20°C
and 1 atm. pressure.
Reaction :
2NH₄Cl + Ca(OH)₂ → CaCl₂ + 2H₂ + 2NH₃