Question

Hydrogen gas is not liberated when a metal reacts with concentrate nitric acid. Give reason .

Answer 1

Answer:

the metal should be more reactive than hydrogen

Explanation:

Ag (s) + HNo3------no reaction

Answer 2

Answer:

Nitric acid is a strong oxidizing agent. Thus, when a metal will react with concentrated nitric acid, the hydrogen will get oxidized to water.

FOR EXAMPLE:

Zn + 4 HNO3 → Zn(NO3)2 +  2NO2 + 2H2O