Question

What is meant by positive and negative deviations from Raoult’s law and how is the sign of ∆mixH related to positive

and negative deviations from Raoult’s law?​

Answer 1

Answer:

According to Raoult's law, the partial vapour pressure of each component in any solution is directly proportional to its mole fraction. ... If the vapour pressure is higher then solution is said to exhibit positive deviation, And if the vapour pressure is lower than the solution than it said to be negtive deviations

Answer 2

Explanation:

A positive deviation indicates that the vapour pressure above the solution is higher than expected. A negative divergence, on the other hand, indicates that the solution's vapour pressure is lower than expected.