The gases liberated when zinc reacts with dil | vedclass

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Question

(A) The reaction of zinc with nitric acid depends on the concentration of the acid. When zinc reacts with cold and dilute $HNO_3$,it produces nitrous

Vedclass · Accepted Answer

$N_2O, NO_2$

Vedclass · Answer

(A) The reaction of zinc with nitric acid depends on the concentration of the acid. When zinc reacts with cold and dilute $HNO_3$,it produces nitrous oxide $(N_2O)$: $4 Zn + 10 HNO_3 (	ext{dilute}) \longrightarrow 4 Zn(NO_3)_2 + N_2O + 5 H_2O$ When zinc reacts with concentrated $HNO_3$,it produces nitrogen dioxide $(NO_2)$: $Zn + 4 HNO_3 (	ext{conc.}) \longrightarrow Zn(NO_3)_2 + 2 NO_2 + 2 H_2O$ Therefore,the gases liberated are $N_2O$ and $NO_2$ respectively.

The gases liberated when zinc reacts with dilute and conc. $HNO_3$ respectively are

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