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 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
The mixture contain optical isomers

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Mass Transfer
The rate of solid-liquid extraction is limited by the

Diffusion of the solute through the solvent in the pores to the outside of the particle
All of these
Phase change of the solute as it dissolves in the solvent
Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution

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