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Hi!

I have a doubt I hope you can solve it
This is my azeotrope diagram :


Now if I suppose to heat a solution of  A and B with concentration C till I reach the left low-end liquid curve I'll get a phase-equilibrium :

 In fact I have my liquid solution of A and B with X₁ concentration. And  very little vapor  formed with V₁concentration.


Now  I know what happens at that vapor: there will be some cycle of condensation and evaporation till it wil reach the azeotropic point

My  doubt concerns about what happens at  the liquid phase X₁  :  after the vapor V₁ formation the liquid phase X₁ is poorer of the A compound (the more volatile one)

So  its  concentration shouldn't be the same "c"!?!?! ...but should be shifted little bit to the left of the low-end liquid curve as I've shown through  those red  arrows

Mu conclusion:

1)So looking at the graph it means that in order to continue distillation of the remaining solution I've to gradually increase the temperature . 
2) the distillation residue (of the starting liquid solutuon) is a  liquid pure in B while the distillation  product is the azeotrope?



Is this correct??
Thanks a lot!!