Write true or false for the following statement:
Hydrogen gas is evolved when a metal reacts with nitric acid.
Hydrogen gas is evolved when a metal reacts with nitric acid.
(FALSE) False.
Nitric acid $(HNO_3)$ is a strong oxidizing agent.
When a metal reacts with $HNO_3$,the hydrogen gas produced is oxidized to water $(H_2O)$ by the nitric acid,and the nitric acid itself gets reduced to nitrogen oxides such as $N_2O$,$NO$,or $NO_2$.
Therefore,hydrogen gas is generally not evolved during this reaction,except in the case of very dilute nitric acid reacting with magnesium $(Mg)$ or manganese $(Mn)$.
Nitric acid $(HNO_3)$ is a strong oxidizing agent.
When a metal reacts with $HNO_3$,the hydrogen gas produced is oxidized to water $(H_2O)$ by the nitric acid,and the nitric acid itself gets reduced to nitrogen oxides such as $N_2O$,$NO$,or $NO_2$.
Therefore,hydrogen gas is generally not evolved during this reaction,except in the case of very dilute nitric acid reacting with magnesium $(Mg)$ or manganese $(Mn)$.
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