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Hydrogen is not liberated when trioxonitrate(v)acid reacts with zinc because

Chemistry
JAMB 1985

Hydrogen is not liberated when trioxonitrate(v)acid reacts with zinc because

  • A. zinx is not rendered passive by acid
  • B. hydrogen produced is oxidized to water
  • C. oxides of nitrogen are produced
  • D. all nitrates are soluble in water
  • E. trioxonitrate(v)acid is a strong acid
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Correct Answer: Option B
Explanation

When metals react with nitric acid, hydrogen gas is liberated. Nitric acid is a very strong oxidizing agent. So , it oxidizes the hydrogen gas formed during the reaction to form water and an oxide of nitrogen.

\(Zn+4HNO_{3} \to Zn(NO_{3})_{2} + 2NO_{2} + 2H_{2}O\)


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