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100 moles of benzene (A) and toluene (B) mixture containing 50 mol% of benzene is subjected to a differential distillation at
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VIMolssvapor te cenounsby InitallyLIMeusaveilalolS At any TmmResidw wu hauu-d) (L-d L) uttut whau ydL drautpul Alr So uu haulL2 dt= (ItI.25) d C01-25)(1+) O033 .S (o)/ dL- (025 L 33 Ly 0.33 Imlo.5 n5 1 33 25 33 33 O.376 46 LI2OL 4 282 L2 0070.0144)MaAurage tombaution ducullatid Distillat m Malu 096438 29.9052 Malus 1Y and x are in equillibrium so relativite volatility formula used .

At one point partial fraction is used 1/(x*(x+1) which becomes 1/x -1/(x+1)

At l1 x1 is the composition and at l2 x2 is composition

Do l2 is 70.0144 moles which means out of 100 moles 70 are in residue which means almost 30 moles distilled as an extra I have calculated average vapor composition of distillate

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