Properties

of

ammonia

Colourless and pungent gas

Less dense than air

Highly soluble in water

Density : 0.68

Melts at -77.7 C

Boils at -33.35 C

video

At its boiling point and at

1 atmosphere

pressure

Dissolve in water

Turns moist red litmus paper to

blue

Neutralise acids

Produce alkaline solution

pH value :

9-10

Make ammonium

salt

NH3 (g) + H2SO4 (aq) (NH4)2SO4 (aq)

NH3 (g) + HNO3 (aq) NH4NO3 (aq)

Ammonia + Sulphuric acid ammonium sulphate

Ammonia + Nitric acid ammonium nitrate

Reacts with metallic ions

Form metallic hydroxides

Except Na , K and Ca2+++