The correct option is D At equilibrium, the concentration of solute in solution will remain constant
Organic liquid can be purified from impurities using steam distillation.
In steam distillation, a liquid (generally organic) that is immiscible with water, and has a higher B.P. than water can be boiled (distilled) at a much lower temperature by passing steam through it.
Dissolution:
When a solid solute is added to the solvent, some solute dissolves and its concentration increases in the solution. This is called dissolution.
Crystallisation:
Some solute particles in the solution collide with the other solid solute particles and get separated out of solution. This is called crystallisation.
At equilibrium,
Rate of dissolution = Rate of crystallisation
Solute + Solvent ⇌Solution
At this stage, the concentration of solute in solution will remain constant under the given temperature and pressure conditions. Such a solution is said to be saturated with the given solute.
Thus, statement (a), (b) and (c) are correct.