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MHT CET · Chemistry · States of Matter

The volume of a gas is \(4 \mathrm{dm}^3\) at \(0^{\circ} \mathrm{C}\). Calculate new volume at constant pressure when the temperature is increased by \(10^{\circ} \mathrm{C}\).

  1. A \(2.07 \mathrm{dm}^3\)
  2. B \(3.21 \mathrm{dm}^3\)
  3. C \(4.14 \mathrm{dm}^3\)
  4. D \(6.54 \mathrm{dm}^3\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(4.14 \mathrm{dm}^3\)

Step-by-step Solution

Detailed explanation

According to Charles' law,
\(
\begin{aligned}
& \frac{\mathrm{V}_1}{\mathrm{~T}_1}=\frac{\mathrm{V}_2}{\mathrm{~T}_2} \text { (at constant } \mathrm{P} \text { and } \mathrm{n} \text { ) } \\
& \mathrm{T}_1=0{ }^{\circ} \mathrm{C}=273 \mathrm{~K} \\
& \mathrm{~T}_2=10^{\circ} \mathrm{C}=283 \mathrm{~K} \\
& \frac{4 \mathrm{dm}^3}{273 \mathrm{~K}}=\frac{\mathrm{V}_2}{283 \mathrm{~K}} \\
& \mathrm{~V}_2=\frac{4 \times 283}{273}=4.1465 \mathrm{dm}^3
\end{aligned}
\)