Question

A gas at the temperature 250 K is contained in a closed vessel. If the gas is heated through 1K, then the percentage increase in its pressure will be

• A. 0.4%
• B. 0.2%
• C. 0.1%
• D. 0.8%

Answer 1

Answer: (A)

0.4%

Answer 2

$P \propto T$ Ž $\frac{P_{1}}{P_{2}} = \frac{T_{1}}{T_{2}}$Ž $\frac{P_{2} - P_{1}}{P_{1}} = \frac{T_{2} - T_{1}}{T_{2}}$

Ž $\left( \frac{\Delta P}{P} \right)\% = \left( \frac{251 - 250}{250} \right) \times 100$ = 0.4 %