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Aluminium does not react with either dilute or concentrated trioxonitrate (V) acid because

Chemistry
JAMB 2018

Aluminium does not react with either dilute or concentrated trioxonitrate (V) acid because

  • A. it is insoluble in either dilute or concentrated trioxonitrate (V) acid
  • B. it is lower than hydrogen in the electrochemical series
  • C. the reaction with trioxonitrate (V) acid has a light activation energy
  • D. an insoluble oxide is formed on its surface which renders it passive
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Correct Answer: Option D
Explanation

Aluminium doesn’t react with either dilute or concentrated trioxonitrate (V) acid because an insoluble oxide is formed on its surface which renders it passive. It will depend on the concentration of the nitric acid used…. Although aluminium reacts with dilute nitric acid to produce aluminium nitrate and hydrogen gas, concentrated (>60%) nitric acid is such a powerful oxidising agent that it instantly causes a thin layer of aluminium oxide to coat the surface of the aluminium

There is an explanation video available below.


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Explanation Video

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