Question

What is the entropy change when 1 mole oxygen gas expands isothermally and reversibly from an initial volume of 10 L to 100 L at 300 K?

• A. $19.14JK^{- 1}$
• B. $109.12JK^{- 1}$
• C. $29.12JK^{- 1}$
• D. 10 $JK^{- 1}$

Answer 1

Answer: (A)

$19.14JK^{- 1}$

Answer 2

: $\Delta S = 2.303nR\log\frac{V_{2}}{V_{1}}$