Question

When dilute hyrochloric acid reacts with zinc which gas evolve .write the molecular formula of gas? Plz help me

Answer 1

ANSWER:

the gas evolved when Dil.HCl reacts with zinc is Hydrogen(H2)

EQUATION:

2HCl(Dil.) + Zn➡ ZnCl2 + H2

the reaction is displacement reaction.

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Answer 2

When dilute hydrochloric acud (HCl) reacts with zinc (Zn) the evolved gas is hydrogen gas.The molecular formula of this gas is H2.

the following reaction takes place-

2HCl+Zn------->ZnCl2+ H2