Distillation: Phase equilbria

0:00 Gibbs phase rule (Not Biggs!)
2:02 Boiling point and vapour pressure
2:49 Antoines equation
3:00 Raoult's law and Dalton's law
4:47 Exercise: Draw P-x,y diagram at constant T
5:53 Solution to exercise
6:50 Constant P and x-y diagram
7:29 Non-ideal mixtures: Activity coefficients
8:26 Henry's law
9:06 Why non-ideal?
9:43 Azeotrop
10:24 Distillation vs Azeotrop
10:34 Summary

Describes how P-x,y diagrams (constant T) can be created for ideal solutions using Raoults law and Daltons law.

Continues with x-y-diagrams,
non-ideal mixtures,
Henry’s law and activity coefficients,
why some mixtures are not ideal and
what an azeotrope is

Links to distillation screencasts

Intro:

Continuous destillation (McCabe-Thiele):

Wider context:

Special:

[saiakash]

Sir, In one of your videos you've said that in a continuous counter current distillation every tray is at different boiling temperature (i.e. my guess:at any tray, incoming vapour which was in equilibrium from which tray it is coming from, so when it arrives at a new tray the vapor sees a new temp. So it again it brings itself to new equilibrium according to temp., and so on the separation occurs), my doubt is what i am guessing is it true?? And if it is true then which graph follows as its governing graph Pxy or Txy in a distillation column??
And what about the movement of coordinates on these graphs:is it vertical or horizontal??