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Question

What is the entropy change when 1 mol of an ideal gas is compressed isothermally from 10 L to 5 L? (R = 8.314 J/mol·K)

Options

Choose one · Correct answer highlighted

Explanation

Δ S = nR ln(V₂/V₁) = 1 × 8.314 × ln(5/10) = 8.314 × (-0.693) = -5.76 J/K.