Elementary Principles 456

# Elementary Principles 456 - 10.8 a. Let Bz = benzene, Tl =...

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10- 8 10.8 a. Let Bz = benzene, Tl = toluene * 6.89272 1211.033/( 220.790) * 6.95805 1346.773/( 219.693) ** * Antoine equations: 10 (=1350.491) 10 (=556.3212) Raoult's law: ( )/( - ) (=0.307) , T Bz T Tl Bz Tl Bz Tl B p p xP p p p y −+ = = =− * / ( 0.518) Total mole balance: 100 = Benzene balance: 40 = 40 100 (=44.13), 100 (=55.87) Fractional zB z B z vl Bz v Bz l Bz v Bz Bz xp P nn yn xn x n yx == + + ⇒= = − benzene vaporization : / 40 (=0.571) Fractional toluene vaporization : (1 )/60 (=0.354) Bv B z Tv B z fn y y = The specific enthalpies are calculated by integrating heat capacities and (for vapors) adding the heat of vaporization. Qn H n H out out in in ∑∑ ±± (= 1097.9) b. Once the spreadsheet has been prepared, the goalseek tool can be used to determine the bubble-point temperature (find the temperature for which n v =0) and the dew-point
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## This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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