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  • Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride. The volume of hydrogen gas produced at STP from the reaction of <img alt="11.5 \mathrm{~g}" src="https://entrancecorner.oncode

Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride. The volume of hydrogen gas produced at STP from the reaction of 11.5 \mathrm{~g} of zinc with excess \mathrm{HCl} is \mathrm{L} (Nearest integer)
(Given : Molar mass of \mathrm{Zn} is 65.4 \mathrm{~g} \mathrm{~mol}^{-1} and  Molar volume of \mathrm{H}_{2} at STP =22.7 \mathrm{~L})

Option: 1

4


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\mathrm{Zn}+2 \mathrm{HCl} \longrightarrow \mathrm{ZnCl}_{2}+\mathrm{H}_{2}

\text{No. of moles of }\; \mathrm{Zn}=\frac{11.5}{65.3}=\text{ No. of moles of}\; \mathrm{H}_{2}
\text{No. of }\;\mathrm{H}_{2}\: \text{liberated} =0.176 \times 22.7 \, \mathrm{Lt}.
=3.99 \mathrm{~L}=4 \mathrm{Lt}.

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Divya Prakash Singh

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