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JAMB Chemistry 2006 Question 5

Question 5

Nitrogen and its Compounds

In the diagram above, mixture Y is

Diagram for this question
  1. A.NH4NO3(s) + CaSO4(s)
  2. B.NH4Cl(s) + NaNO2(aq)
  3. C.NH4NO2(s) + Na2SO4(s)
  4. D.NH4Cl(s) + Ca(OH)2(s)
Show the answer and explanation

Answer: D (NH4Cl(s) + Ca(OH)2(s))

Explanation

Ammonia is prepared in the laboratory by heating an ammonium salt with a base: 2NH4Cl + Ca(OH)2 → CaCl2 + 2H2O + 2NH3, and dried with quicklime.