Hydrogen is not liberated when trioxonitrate(v)acid reacts with zinc because
- zinx is not rendered passive by acid
-
hydrogen produced is oxidized to water
- oxides of nitrogen are produced
- all nitrates are soluble in water
- trioxonitrate(v)acid is a strong acid
The correct answer is: 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.
\(Zn+4HNO_{3} \to Zn(NO_{3})_{2} + 2NO_{2} + 2H_{2}O\)