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JAMB Chemistry 2013 Question 38

Question 38

Metals and their Compounds

Aluminium containers are frequently used to transport trioxonitrate(V) acid because aluminium

  1. A.has a low density.
  2. B.does not react with the acid.
  3. C.does not corrode.
  4. D.has a silvery-white appearance.
Show the answer and explanation

Answer: B (does not react with the acid.)

Explanation

Concentrated HNO3 forms a thin protective oxide layer on aluminium (it becomes passive), so the metal is not attacked.