The heat of vaporization of hexane is 30.8 kJ/mol. The boili…

The heat of vaporization of hexane is 30.8 kJ/mol. The boiling point of hexane at a pressure of 1.00 atm is 68.9 ̊C. What will the boiling point, in celsius, be at a pressure of 0.50 atm? Clausius-Clapeyron eq.  ln(P1/P2) = (Hvap/R)(1/T1 – 1/T2), R = 8.314 J/K•mol