passwella.
Menu

JAMB Chemistry 1992 Question 31

Question 31

Nitrogen and its Compounds

In the experiment above (Z is heated in the flask and nitrogen (I) oxide is collected over water), Z can be

Diagram for this question
  1. A.a solution of sodium dioxonitrate (III) and ammonium chloride
  2. B.a solution of lead trioxonitrate (V)
  3. C.a solution of sodium trioxonitrate (V) and ammonium chloride
  4. D.concentrated tetraoxosulphate (VI) acid and sodium trioxonitrate (V).
Show the answer and explanation

Answer: C (a solution of sodium trioxonitrate (V) and ammonium chloride)

Explanation

Heating ammonium trioxonitrate(V) gives nitrogen(I) oxide: NH4NO3 → N2O + 2H2O. A mixture of sodium trioxonitrate(V) and ammonium chloride produces ammonium trioxonitrate(V) when heated, so it gives N2O.