SolutionMedium
Question
Mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law due to:
Options
A.Increase in escaping tendency of molecules of each component.
B.Formation of hydrogen bonding between acetone and chloroform
C.Stronger intermolecular forces between chloroform molecules than those between chloroform and acetone molecules.
D.Repulsive forces.
Solution
Sol. [Key Concept: Negative deviation from Raoult's law (chloroform–acetone H-bond)]
Acetone and chloroform show negative deviation from Raoult's law due to stronger H-bonding between acetone and chloroform mixture.
Hence, escaping tendency decreases
∴ Vapour pressure decreases
∴ Boiling point increases.
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