JEE Main202427 Jan 2024Morning ShiftChemistrySolutionsActual
A solution of two miscible liquids showing negative deviation from Raoult's law will have :
Options
- Aincreased vapour pressure, increased boiling point
- Bincreased vapour pressure, decreased boiling point
- Cdecreased vapour pressure, decreased boiling point
- Ddecreased vapour pressure, increased boiling point
Correct answer
D. decreased vapour pressure, increased boiling point
Step-by-step solution
Raoult's law states that a solvent's partial vapour pressure in a solution (or mixture) is equal or identical to the vapour pressure of the pure solvent multiplied by its mole fraction in the solution. The compounds which show negative deviation from Raoult's law are a mixture of acetone and chloroform. This results in the formation of the hydrogen bonding between atoms of molecules. There is a decrease in the vapour pressure of the mixture that results in a negative deviation from Raoult's law. Solution with negat