State what an aqueous solution of NH₃ is called. State how it is prepared giving reasons.

State why an aq. soln. of NH₃

(i) turns red litmus blue

(ii) is a weak base and a weak electrolyte.

Convert (i) ammonia (ii) ammonium hydroxide to an ammonium salt using (a) HNO₃ (b) H₂SO₄

State a reason why reaction of liquor ammonia with nitric acid is a neutralization reaction.