The ∆G° of vaporization for cyclohexane at 298 K and 1.00 atm is -0.2164 kJ/mol. Calculate the pressure, in atm, of cyclohexane vapor in equilibrium with cyclohexane liquid at 298 K.

Answer 1

By definition, the pressure of the vapor in equilibrium with the liquid would be 1.00 atm. This is because the definition of boiling point is that temperature at which the vapor pressure is equal to the atmospheric pressure. The fact that ∆Gº is negative tells us that this reaction is spontaneous at this temperature.