Question

The following are correct for partially miscible liquids except.....
a) solubility can increase with decrease in temperature.
b) decrease in temperature cannot make them completely miscible.
c) their solubility can be increased with temperature increase.
d) they do not yield homogeneous solution at all compositions.

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

A homogeneous solution is defined as the solution which contains even distribution of solute particles into the solvent.

Since, kinetic energy is directly proportional temperature according to the following relationship.

                     $K.E \propto \frac{3}{2}kT$  

So, when we increase the temperature of a solution then kinetic energy of its particles increases. As a result, more number of collisions will take place due to which rate of solubility will also increase.

Thus, we can conclude that the following are correct for partially miscible liquids except solubility can increase with decrease in temperature.