Answer to Question #94323 in General Chemistry for India Washington

Question

The standard (1 bar) boiling point of acetone is 56.1 C, and its enthalpy of vaporization is 29.1 kJ/mol. Calculate the vapor pressure of acetone at 43.5 C.

Answer 1

ln(p2 / p1)=- (∆Hvap/R) x (1/T2 - 1/T1)

ln(p2/1)= -(29.1/8.314) x (1/329.25 - 1/316.65)

p2=1.000423 bar