33 Gasoline is a mixture of hydrocarbons containing benzene (CoH6), toluene (CyHg), ethylbenzene (CgH10) and xylene (CgH10; BTEX) that are often added to boost octane ratings. BTEX are highly volatile with a maximal saturated vapor pressure of 10 kPa at 20 C for benzene and 28 kPa for toluene. A regular gasoline is found to contain 0.6% of benzene. Assume that the gasoline has an average molecular weight of 94 g/mol and a density of 780 g/L whereas the density of benzene is 876 g/L. Estimate the saturated vapor pressure of benzene and toluene in equilibrium with gasoline. OA 81 Pa OB. 81 Pa OC. 810 Pa OD.B.1 kPa