The normal boiling point of acetone is 56.1 degrees Celsius and the AHvap=31.3kJ/mol. What is the vapor pressure at 25 degrees celcius

Answer 1

Clausius-Clayperon equation:

ln(P1P2)=−ΔHvap/R (1/T1−1/T2)

ln(1atm/P2) = 31.3kJ/mole/8.324 J/molK(1/273K - 1/298K)

Solve for P2. If you have problems solving, post again wuth what you were able to do and where you had problems.