Chloroform has a boiling point of 61.1°C and dichloromethane has a boiling point of 40.0°C.When 0.250 mol of dichloromethane is added to 0.750 mol of chloroform,the resulting solution will have a boiling point
A)between 40.0°C and 61.1°C,but closer to 61.1°C.
B)between 40.0°C and 61.1°C,but closer to 40.0°C.
C)greater than 61.1°C.
D)less than 40.0°C.

Question

Quizplus · Accepted Answer

Since the boiling point of a solution is dependent on the number of solute particles in the solution, adding dichloromethane (0.250 mol) to chloroform (0.750 mol) will increase the number of solute particles present in the solution. This will result in an increase in the boiling point of the solution. However, since dichloromethane has a lower boiling point than chloroform, the resulting solution will have a boiling point closer to that of chloroform (61.1°C) but still higher than dichloromethane (40.0°C), so the answer is between 40.0°C and 61.1°C, but closer to 61.1°C, which is option A.

Chloroform Has a Boiling Point of 61