Question Detail
Question
A system in State A has 4 microstates and in State B has 16 microstates. What is the entropy change for A → B? (k = 1.38 × 10⁻²³ J K⁻¹)
Correct Answer
Option D is the correct answer.
Detailed Explanation
ΔS = k ln(W_B/W_A) = (1.38 × 10⁻²³) ln(16/4) = (1.38 × 10⁻²³) ln(4) = (1.38 × 10⁻²³)(1.386) = 1.91 × 10⁻²³ J K⁻¹.
Hint
The notes provide this exact calculation.