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JAMB Chemistry 2001 Question 30

Question 30

Redox Reactions

3Cu(s) + 8HNO3(aq) → 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g)
In the equation above, copper is

  1. A.an electron acceptor
  2. B.a base
  3. C.an oxidizing agent
  4. D.a reducing agent
Show the answer and explanation

Answer: D (a reducing agent)

Explanation

Copper goes from 0 to +2: it loses electrons and is oxidised, so it is the reducing agent (it reduces the nitric acid to NO).