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

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

A. has a low-density

B. does not react with the acid

C. does not corrode

D. has a silvery – white appearance

QUICK ANSWER…

C

DETAILS…

When aluminum comes in contact with concentrated nitric acid, a brief reaction occurs to form a protective oxide of aluminum Al₂O₃, this oxide which does not react with the acid protects the original metal from corrosion.

Now for the right answer to the above question:

  1. Option A is incorrect. the density of aluminum is irrelevant.
  2. Option B is incorrect. Aluminum actually reacts with the acid to form aluminum oxide which prevents further reaction.
  3. C is correct. aluminum, on exposure to the acid briefly forms an oxide that prevents corrosion.
  4. D is not the correct answer. The physical appearance of aluminum is irrelevant to its resistance to corrosion.

KEY-POINTS…

You may please note these/this:

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  • Aluminum actually reacts with the acid, but aluminum oxide formed from this reaction does not react with the acid.
  • Other metals do not form this kind of protective layer, as their oxides could further react with the acid.

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/ culled from 2015 JAMB-UTME Chemistry past question 36 /

Aluminium containers are frequently used to transport trioxonitrate (v) acid because » QuizTablet
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