Mass Transfer
A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?

The mixture contain optical isomers
The mixture exhibits an azeotrope at 101.3 kPa
The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10
The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10

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Mass Transfer
Pick out the wrong statement. Raoult's law does not apply, when the

Chemical combination or molecular association between unlike molecules takes place in the formation of solution
Component molecules are nonpolar
Attractive forces between like and unlike molecules in the solution are approximately equal
Size of component molecules are not equal

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