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JAMB Chemistry 1988 Question 34

Question 34

Nitrogen and its Compounds

Suitable reagents for the laboratory preparation of nitrogen are

  1. A.sodium dioxonitrate (III) and ammonium chloride
  2. B.sodium trioxonitrate (V) and ammonium chloride
  3. C.sodium chloride and ammonium trioxonitrate (V)
  4. D.sodium chloride and ammonium dioxonitrate (III).
Show the answer and explanation

Answer: A (sodium dioxonitrate (III) and ammonium chloride)

Explanation

Warming sodium dioxonitrate (III) (NaNO2) with ammonium chloride forms ammonium dioxonitrate (III), which decomposes to nitrogen and water.