Question

If a given mass of gas occupies a volume of 10 cc at 1 atmospheric pressure and temperature of 100⁰C (373.15 K). What will be its volume at 4 atmospheric pressure; the temperature being the same

• A. 100 cc
• B. 400 cc
• C. 2.5 cc
• D. 104 cc

Answer 1

Answer: (C)

2.5 cc

Answer 2

$P \propto \frac{1}{V}$ ∴ $\frac{V_{2}}{V_{1}} = \frac{P_{1}}{P_{2}}$ ⇒ $V_{2} = 10 \times \left( \frac{1}{4} \right) = 2.5cc$