JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride. The volume of hydrogen gas produced at \(STP\) from the reaction of \(11.5\,g\) of zinc with excess \(HCl\) is \(..........L\) (Nearest integer) (Given : Molar mass of \(Zn\) is \(65.4\,g\,mol ^{-1}\) and Molar volume of \(H _2\) at \(STP =22.7\,L\) )
- A \(2\)
- B \(6\)
- C \(8\)
- D \(4\)
Answer & Solution
Correct Answer
(D) \(4\)
Step-by-step Solution
Detailed explanation
\(Zn +2 HCl \rightarrow ZnCl _2+ H _2 \uparrow\) Moles of \(Zn\) used \(=\frac{11.5}{65.4}=\) Moles of \(H _2\) evolved Volume of \(H _2=\frac{11.5}{65.4} \times 22.7\,L =3.99\, L\)
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