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JAMB Chemistry 1998 Question 32

Question 32

Nitrogen and its Compounds

3CuO(s) + 2NH3(g) → 3Cu(s) + 3H2O(l) + N2(g) (i)
2NH3(g) + 3Cl2(g) → 6HCl(g) + N2(g) (ii)
4NH3(g) + 3O2(g) → 6H2O(l) + 2N2(g) (iii)
The reactions represented by the equations above demonstrate the

  1. A.basic properties of ammonia
  2. B.acidic properties of ammonia
  3. C.reducing properties of ammonia
  4. D.oxidising properties of ammonia
Show the answer and explanation

Answer: C (reducing properties of ammonia)

Explanation

In each reaction the nitrogen in NH3 goes from −3 to 0 in N2; ammonia is oxidized, so it acts as a reducing agent.