During which reaction is dihydrogen gas not p | vedclass

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Question

(C) When metals react with dilute sulphuric acid or dilute hydrochloric acid,they typically displace hydrogen to form metal salts and release dihydrog

Vedclass · Accepted Answer

Metal $+$ Dilute nitric acid

Vedclass · Answer

(C) When metals react with dilute sulphuric acid or dilute hydrochloric acid,they typically displace hydrogen to form metal salts and release dihydrogen gas $(H_2)$.However,dilute nitric acid $(HNO_3)$ is a strong oxidizing agent.When a metal reacts with dilute $HNO_3$,the hydrogen gas produced is immediately oxidized to water $(H_2O)$ by the nitric acid,which itself gets reduced to nitrogen oxides $(N_2O, NO, NO_2)$.Therefore,dihydrogen gas is not evolved in this reaction under normal conditions.

During which reaction is dihydrogen gas not produced under normal conditions?

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