Question

A sample of an ideal gas occupies $20\text{L}$ under a pressure of 0.5 atm. Under isothermal conditions, on increasing its pressure to 1.0 atm, its volume will be:

• A. $2.5\text{L}$
• B. $20\text{L}$
• C. $5\text{L}$
• D. $10\text{L}$

Answer 1

The correct option is D $10\text{L}$

Under isothermal conditions, temperature remains constant.
Using Boyle's law:
$P_1{V}_1=P_2{V}_2$
$0.5\times 20=1.0\times V_2$
$V_2=10\text{L}$