Question

A 0.100 m solution of HCl dissolved in benzene has a freezing point depression of 0.512oC, while an 0.100 m solution of HCl in water has a freezing point depression of 0.352oC.

How can you explain the difference in these freezing point depressions?
A) HCl does not form a solution when added to the benzene.
B) The total concentration of solute particles is the same in both solutions.
C) HCl dissociates into ions when it dissolves in benzene, but HCl does not dissociate in water.
D) HCl does not dissociate into ions when it dissolves in benzene, but HCl does dissociate in water.

Answer 1

The difference in freezing point depressions between the HCl solution in benzene and in water can be explained by the dissociation of HCl into ions.

Step-by-step explanation:

The difference in freezing point depressions between the HCl solution in benzene and in water can be explained by the dissociation of HCl into ions.

When HCl dissolves in water, it dissociates into H+ and Cl- ions. This increases the number of solute particles in the solution, leading to a greater freezing point depression.

In benzene, however, HCl does not dissociate into ions. Therefore, the freezing point depression is lower compared to the HCl solution in water.