Chemistry
JAMB 1985
Hydrogen is not liberated when trioxonitrate(v)acid reacts with zinc because
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A.
zinx is not rendered passive by acid
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B.
hydrogen produced is oxidized to water
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C.
oxides of nitrogen are produced
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D.
all nitrates are soluble in water
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E.
trioxonitrate(v)acid is a strong acid
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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