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Question: Answered & Verified by Expert
Keeping temperature constant the pressure of $11.2 \mathrm{dm}^3$ of a gas was increased from $105 \mathrm{kPa}$ to $420 \mathrm{kPa}$. What is the new volume of gas?
ChemistryStates of MatterMHT CETMHT CET 2021 (20 Sep Shift 1)
Options:
  • A $1.4 \mathrm{dm}^3$
  • B $7.0 \mathrm{dm}^3$
  • C $5.6 \mathrm{dm}^3$
  • D $2.8\mathrm{dm}^3$
Solution:
2638 Upvotes Verified Answer
The correct answer is: $2.8\mathrm{dm}^3$
$\begin{aligned} & \mathrm{P}_1 \mathrm{~V}_1=\mathrm{P}_2 \mathrm{~V}_2 \\ & 105 \times 11.2=420 \times \mathrm{V}_2 \\ & \mathrm{~V}_2=\frac{105 \times 11.2}{420} \\ & 2.8 \mathrm{dm}^3\end{aligned}$

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