Question

For the azeotropic rectification which, of the following is applicable?

(a) Distillate should be above bubble point

(b) To have the excessive vapour loss

(c) To decrease the internal reflux ratio

(d) None of the mentioned

I have been asked this question at a job interview.

My query is from Rectification of Azeotropic Mixtures topic in division Distillation of Mass Transfer

Answer 1

The correct choice is (c) To decrease the internal reflux ratio

To elaborate: Since if the internal reflux ratio is increased the vapours will get loss. The vapour loss will affect the separation.