JAMB - Chemistry (1984 - No. 13)
Which of the following methods may be used to prepare trioxonitrate (V) acid (nitric acid) in the laboratory?
Heating ammonia gas with tetraoxosulphate (VI) acid
Heating ammonium trioxonitrate (V) with tetraoxosulphate (VI) acid
Heating sodium trioxonitrate (V) with tetraoxosulphate (VI) acid
Heating potassium trioxonitrate (V) with calcium hydroxide
Heating a mixture of ammonia gas and oxygen.