A solution containing components $\mathrm{A}$ and B follows Raoult's law if:

• A

  $\mathrm{A}-\mathrm{B}$ attraction force is greater than $\mathrm{A}-\mathrm{A}$ and $\mathrm{B}-\mathrm{B}$
• B

  $\mathrm{A}-\mathrm{B}$ attraction force is less than $A-A$ and $B-B$.
• Correct answer
  C

  attraction force remains same as in $\mathrm{A}-\mathrm{A}$ and $\mathrm{B}-\mathrm{B}$
• D

  volume of the solution is different from the sum of volume of the solute and the solvent.

Solution

Raoult's law is valid for ideal solution only. These two components A and B follows the condition of Raoult's law if the force of attraction between $\mathrm{A}$ and $\mathrm{B}$ is equal to the force of attraction between A-A and B-B Positive non-ideal behavior of the vapor pressure of a solution follows Henry's Law at low concentrations and Raoult's Law at high concentrations (pure).

Hence, the correct answer is option: 'C'.