Which gas is evolved when dilute hydrochloric acid reacts with zinc? Write the molecular formula of this gas.

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(N/A) When dilute hydrochloric acid $(HCl)$ reacts with zinc $(Zn)$,it produces zinc chloride $(ZnCl_2)$ and releases hydrogen gas $(H_2)$.
The chemical equation for this reaction is: $Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)$.
The gas evolved is hydrogen gas,and its molecular formula is $H_2$.

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