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JAMB Chemistry 1998 Question 35

Question 35

Halogens

In the experiment above, X could be a solution of

Diagram for this question
  1. A.sodium trioxonitrate (V) and ammonium chloride
  2. B.sodium trioxonitrate (III) and ammonium chloride
  3. C.lead (II) trioxonitrate (V) and copper turnings
  4. D.potassium trioxonitrate (V) and copper turnings.
Show the answer and explanation

Answer: B (sodium trioxonitrate (III) and ammonium chloride)

Explanation

Nitrogen is prepared in the laboratory by warming a mixture of sodium nitrite (sodium dioxonitrate(III)) and ammonium chloride; the gas is collected over water.