Question

$3$ moles of an ideal gas are contained within a cylinder by a frictionless piston and are initially at temperature $T$. The pressure of the gas remains constant while it is heated and its volume doubles. If $R$ is molar gas constant, the work done by the gas in increasing its volume is

• A. $\frac{3}{2}RT\ln 2$
• B. $3RT\ln 2$
• C. $\frac{3}{2}RT$
• D. $3RT$

Answer 1

Answer: (D)

$W=P\Delta V$
$=PV$
$=nRT$
$=3RT$