The vapor pressure of solid benzene is 299 Pa at -30ºC and 3270Pa at 0ºC. The vapor pressure of liquid benzene is 6170 Pa at 10ºC,and 15,800 Pa at 30ºC. (a) Calculate the triple point of benzene(temperature and pressure at which solid, liquid, and vapor allcoexist). This is obtained by using the Clausius-Clapeyron equationfirst to determine ∆vapH for the solid and the liquid, and then togive equations for the curves defining the solid-vapor equilibriumand the liquidvapor equilibrium, and solving both the latterequations simultaneously.
so i have worked out the ∆vaporization H and ∆sublimation H
∆vaporization H=33.6 KJ/mol
∆sublimation H =44.3 KJ/mol
but i am lost after that what do i do next? how do i finishfinding the temperature and pressure at the triple point?