Reason
In the presence of a more volatile liquid solute, only the solute will form the vapours and solvent will not.
Assertion
If a liquid solute more volatile than the solvent is added to the solvent , the vapour pressure of the solution may increase i.e., pₛ > pᵒ.
If a liquid solute more volatile than the solvent is added to the solvent , the vapour pressure of the solution may increase i.e., pₛ > pᵒ.
a. both assestion and reason are correct and reason in the correct explanation for assertion
b. both assertion and reason are correct but reason is not the correct explanation for assertion
c. assertion is correct but reason is incorrect
d. both assertion and reason are incorrect