Question: The answer is given on chegg is not completed, can someone please do all the parts a,b and c. clearly and hand written please (a)
(a) Ethanol and water form a minimum-boiling azeotrope. Azeotropic distillation of mixtures of ethanol and water can be carried out using cyclohexane as entrainer. Cyclohexane forms a heterogeneous azeotrope with water which boils at a temperature lower than pure ethanol and water. Sketch a simple but clear flow diagram for azeotropic distillation of a mixture of ethanol and water using cyclohexane as entrainer. Specify the components in each stream. [10 marks] (b) Consider a mixture of acetone (normal boiling point =56.2C ) and chloroform (normal boiling point =61.1C ) to be separated by a simple distillation column. The mixture forms a maximum-boiling azeotrope with 34.5mol% acetone. The azeotrope boils at 64.5C at atmospheric pressure (101.3 kPa ). Explain, using an appropriate sketch of a simple distillation process, what would you expect as distillate and bottoms if the feed contains 50mol% acetone and why. [5 marks] (c) Using the information given in (b) and the formulae given below, estimate the activity coefficients of acetone and chloroform in a liquid mixture containing 50mol% acetone. [10 marks] [Total 25 marks] All parameters in the following equations have their usual meanings. Modified Raoult's law yiPr=iPrxi Marqules equations ln1=x22[A12+2x1(A21A12)]ln2=x12[A21+2x2(A12A21)]A12=x22x2x1ln1+2x1ln2A21=x12x1x2ln2+2x2ln1 Antoine's equations Acutone: lnP(kPa)=14.3145T(C)+228.060275622 Chlorotorm: lnP(dPa)=13.7324T(())+218552254874 Bxit iat
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