The ∆H_vap and ∆S_vap for acetone are 31.3 kJ/mol and 95 J/(K·mol), respectively. What is the ΔS_surr and ΔS_total at 60 °C?

• A. ΔS_surr = 94 J/K·mol
  ΔS_total = 1.9×10² J/K·mol
• B. ΔS_surr = −94 J/K·mol
  ΔS_total = 1.0 J/K·mol
• C. ΔS_surr = 95 J/K·mol
  ΔS_total = 1.0 J/K·mol
• D. ΔS_surr = −95 J/K·mol
  ΔS_total = 1.9×10² J/K·mol

Answer: (B)