Relative lowering of vapour pressure is directly proportional to

Relative lowering of vapour pressure is directly proportional to the mole fraction of solute. Hence, it is a colligative property.

Raoult’s law

The law was discovered by the French chemist Francois Raoult (1830–1901). It states that the partial vapour pressure of a solvent is proportional to its mole fraction.

If p is the vapour pressure of the solvent (with a substance dissolved in it) and X the mole fraction of solvent (the number of moles of solvent divided by the total number of moles), then

;p = p0X,

where p0 is the vapour pressure of the pure solvent.

  • A solution that obeys Raoult’s law is said to be an ideal solution.

Was this answer helpful?

 
   

0.5 (1)

(0)
(0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question