Question

5 moles of an ideal gas at ${27}^{\circ }C$ expands isothermally and reversibly from a volume of 6 L to 60 L. The work done in kJ is:

• A. -28.72 kJ
• B. -32.60 kJ
• C. 14.28 kJ
• D. 20.32 kJ

Answer 1

The correct option is A -28.72 kJ

$w=-2.303nRT\log \frac{V_2}{V_1}=-2.303\times 5\times 8.314\times 300\log \frac{60}{6}=-28.72kJ$