Question

When an impurity is added to a liquidthen its boiling point increase or decrease?

Answer 1

Generally, impurities increase the boiling point of water. A simple explanation of this is that the impurities dilute the concentration ofwater (the number of water molecules per unit volume decreases), and the number of molecules that can vaporize at any give temperature decreases.

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Answer 2

boiling point increases because it creates a non volatile layer above the volatile liquid layer.
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