Question

A gas occupies a volume of $300cm^{3}$at $27^{0}C$and 620 mm pressure. The volume of gas at $47^{0}C$and 640 mm pressure is

• A. $260cm^{3}$
• B. $310cm^{3}$
• C. $390cm^{3}$
• D. $450cm^{3}$

Answer 1

Answer: (B)

$310cm^{3}$

Answer 2

: $\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}} \Rightarrow \frac{620 \times 300}{300} = \frac{640 \times V_{2}}{320}$

$V_{2} = \frac{620 \times 300 \times 320}{640 \times 300} = 310cm^{3}$