At 25 O C the vapor pressures of pure benzene (CH) and pure toluene (CH.CH,) are 95.1 and 28.4 mmHg, respectively. o c) At 25C, what are the partial pressures of benzene and toluene and the total pressure above a solution containing equal masses of the two components? a d) The vapor above a benzene-toluene solution at 25C is found to have equal mole fractions of benzene and toluene. What must be the mole fraction composition of the liquid that is in equilibrium with this vapor? [Hint: Try a straightforward algebraic solution.]