Equimolar solutions in the same solvent have :

Question

Equimolar solutions in the same solvent have : (A) different boiling and different freezing points (B) same boiling and same freezing points (C) same freezing point but different boiling point (D) same boiling point but different freezing point

Tardigrade Admin · Accepted Answer

Boiling point and freezing point depend on

K_{b}

(molal elevation constant) and

K_{f}

(molal depression constant) of the solvent. Thus equimolar solution (of the non-electrolyte) will have same boiling point and also same freezing point.

Δ T_{f} = K_{f} \times

molality

Δ T_{b} = K_{b} \times

molality
Note : In question (139) set C, nature of solute has not been mentioned. Hence, we have assumed that solute is non-electrolyte.

Q. Equimolar solutions in the same solvent have :

different boiling and different freezing points

same boiling and same freezing points

same freezing point but different boiling point

same boiling point but different freezing point