Question

6 moles of an ideal gas expand isothermally and reversibly from a volume of 1 litre to a volume of 10 litres at 27?C. What is the maximum work done?

• A. 47 kJ
• B. 100 kJ
• C. 0
• D. 34.465 kJ

Answer 1

Answer: (D)

34.465 kJ

Answer 2

W = - 2.303 nRT log $\frac{V_2}{V_1}$
Given n = 6, T = 27?C = 273 + 27 = 300 K
V1 = 1 L, V2 = 10 L
$\therefore$ W = - 2.303 ? 6 ? 8.314 ? 300 log $\frac{10}{1}$
=34.465 kJ