Question

The temperature of a gas at pressure P and volume V is 27°C. Keeping its volume constant if its temperature is raised to 927°C, then its pressure will be

• A. 2 P
• B. 3 P
• C. 4 P
• D. 6 P

Answer 1

Answer: (C)

4 P

Answer 2

Using Charle’s law $\frac{P_{1}}{P_{2}} = \frac{T_{1}}{T_{2}}$

or $P_{2} = \frac{P_{1}T_{2}}{T_{1}} = \frac{P(273 + 927)}{(273 + 27)}$ = 4P.