Trouton's rule states that AH/Tb = 88 j/deg-mole, where Tb is the boiling point and AH, is the heat of vaporization. (This rule holds for almost all substances). a. For a liquid, which obeys the Clausius-Clapyron equation, calculate the vapor pressure of the liquid at a temperature equal to one-third of its normal boiling point (in °K). b. The normal boiling point of a liquid is 120 °C. Calculate the vapor pressure of the liquid at 121 °C. c. The vapor pressure of acetonitrile is changing at the rate of 0.030 atm/deg near its boiling point of 80 °C. Calculate its heat of vaporization.