Question

Diagram 1 Liquid-Vapor Phase Diagram for a Binary Mixture of A and B 90 80 Temp (°C) 70 60 50 0.6 1.0 0.2 0.4 0.8 Mole Fraction of Organic Molecule A

Answer 1

TA 90 Vapour place 30 70 Тоттр Liquidt veyour 60 () p. مر Liquid please 50 TB 0 0.2 0.4 0.6 0.8 1 0 Mole fraction of deganie molecule A rahati Fig: Liquid-vapour phase fare a Binery Mixture of A and B in a dig . O From dhe diagramine The 2 beiling point of pure organie A is the non from the above figure vean comment that when ithe veawposition of ergerie A is on binary mixture, the mixture is said to be pure organic B. so when the imple-freaction oreganie molecule A i 1.0, the ninture has only pure organie A Ta is the boiling temperature of pure organic A. point puce deganie & The beiling q A is 90°6

@ Wet what mole fraction does the mixture farm has a If the oreganic forms of liquid cailon cursue that point will denote Hence this ag an azebrape ? Ane: Azeotropie mixture is a mixture chat fixed composition arro boils at a canatant temperature binary mixture of organic A and an azetreapie misture then the beiling temperature comp and vapour phase will meet at a point The compartion of the mixture corresponding to the ageotropic 'icomposition. binary mixture clonat form azektropie mixture For azeotropie mixture composition of organic. A composition Ain' organie in liquid phase vapour phace composition of organic B - composition of in liquis phare organic B in vapour phase a solution of the tuea veomponento in prepared that has male freaction XA 0.10 : Freom the diagramone above what temperature will the entere bample in the rapace phase? T= ? ane: when the recomposition of organic the mixture will start art a temperature bailing ~ 53°C. At this temperature acco vapeur phare will be micher in B organie a molecule and liquid phase create rechere in A melcule. be Ain 0.10 the ke the organie

50 °C But when the temperature is about 60 the entire sample will be in the vapour phase as she is T= 60° ☺ the boiling popint of popint of a purce organic B & T = 50 Fram the diagramıne the composition alone vapeur place at 86c has mole freaction of no it is clear that the a rapour place at 856 from the diagramane composition of male fraction of a has XA = 0.5 LAS ازرار