Question

If $300\,mL$ of a gas at $27^{\circ} C$ is cooled to $7^{\circ} C$ at constant pressure, its final volume will be

• A. 350 mL
• B. 540 mL
• C. 135 mL
• D. 280 mL

Answer 1

Answer: (D)

280 mL

Answer 2

According to Charles??law, $\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}$ $\Rightarrow$ Putting the given values : $\frac{300\,mL}{300\,K} = \frac{V_{2}}{280\,K}\,$ $\Rightarrow\,V_{2} = 280 \,mL$