Problem 1 (67 points) Situation: A waste airstream flows at the rate of 0.51 [m3/s], at 313.52 [K] and 1 [bar] and contains 1.1% by volume of toluene vapors. It is desired to recover at least 94% of the toluene in the gas by scrubbing it at 313.52 [K] using a toluene-free, nonvolatile wash oil to absorb the toluene vapors. Wash oil-toluene solutions are ideal. Assume that the wash oil flow rate is equal to 1.3 times de minimum value. The vapor pressure of toluene at 313.52 [K] is 0.080 [bar]. Data: Use the following properties if needed: PG PL UL OL ML MG [kg/m3] [mPa.s] [mN/m] [kg/mol] [kg/mol] [kg/m3] 840 1.2 2.0 22 0.198 0.030 Requirements: Please, write the value for the following variables: (1) The slope of the equilibrium line (4 points): 0.0907 X (2) The minimum: 1.253 x and actual: 1.754 X wash-oil flow rates expressed in [mol/s]. (6 points). (3) The toluene concentration in the exit wash oil, expressed as a mole fraction (5 points): 0.115 X