Question

Which of the following solutions is an example of negative deviation from Raoult’s law?

• A. Acetone + Ethanol
• B. Carbon tetrachloride + chloroform
• C. Acetone+ Chloroform
• D. Water + Ethanol

Answer 1

Answer: (C)

Acetone+ Chloroform

Answer 2

$\mathrm { CH } _ { 3 } \mathrm { COCH } _ { 3 } + \mathrm { CHCl } _ { 3 }$ is an example of solution

showing negative deviation from Raoult’s law since A – B attractions (acetone + chloroform ) are more than A – A (acetone - acetone) and B – B (chloroform – chloroform) attraction.