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(Solved): The table below shows the compositions (% mass) of the vapor and liquid phases at equilibrium for so ...



The table below shows the compositions (% mass) of the vapor and liquid phases at equilibrium for solutions of A and B at the indicated temperatures: \table[[Temperature (

\deg C

),

%A

in vapor,

%A

in liquid],[70,100,100],[75,97,79],[80,93,65],[85,85,55],[90,77,45],[95,69,37],[100,60,28],[105,50,20],[110,40,12],[115,25,6],[120,0,0]] (a) Construct a vapor-liquid phase diagram for this system. (b) A mixture of 30 g of A and 70 g of B is distilled using a simple distillation apparatus. At what temperature would the first drop distill? (c) A mixture of 50 g of A and 50 g of B is distilled using a very efficient fractionating column. Construct a distillation curve (temperature versus mL of distillate) for this system knowing that the density for

A

and

B

is

1.05(g)/(m)L

and

0.96(g)/(m)L

, respectively. Please explain part c in detail.



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