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JAMB Chemistry 1981 Question 19

Question 19

Nitrogen and its Compounds

In the preparation of ammonia, which of the following is used as the drying agent?

  1. A.CaO
  2. B.CaCl2
  3. C.Conc. H2SO4
  4. D.P2O5
  5. E.H3PO4
Show the answer and explanation

Answer: A (CaO)

Explanation

Ammonia is basic, so it is dried with quicklime (CaO). Acidic driers react with it and CaCl2 forms a complex with it.