Question

By what percentage should the pressure of a given mass of a gas be increased so as to decrease its volume by 10% at a constant temperature?

• A. 8.10%
• B. 0.091
• C. 10.10%
• D. 11.10%

Answer 1

Answer: (D)

11.10%

Answer 2

$\frac{PV}{T} = \frac{P' \left(90/100\right)V}{T}$ or $\frac{P'}{P} = \frac{100}{90} = 1+ \frac{10}{90}$ or $\frac{P' - P}{P} = \frac{10}{90} = 11.1 \%$