Question

How to break emulsion in extraction?

(a) By adding NaCl

(b) By adding HCl

(c) By adding alcohol

(d) By adding benzene

This question was posed to me by my school principal while I was bunking the class.

This interesting question is from Contact Equilibrium Separation Process topic in section Contact Equilibrium Separation Process of Food Processing Unit Operations

Answer 1

Correct choice is (a) By adding NaCl

The best explanation: One method that is often used to break up an emulsion is to add some salt like NaCl to increase the ionic strength of the aqueous layer.