Practice question
Question
Calculate Δ Ssys when 1 mol of an ideal gas is compressed isothermally from 25 L to 5 L at 350 K. (R = 8.314 J/mol·K)
Explanation
Δ S = nR ln(V₂/V₁) = 1 × 8.314 × ln(5/25) = 8.314 × ln(0.2) = 8.314 × (-1.609) = -13.38 J/K.
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