The freezing point of a solution is
A. higher than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstruction by solute particles.
B. lower than the freezing point of the solvent alone because lower temperature is required to accelerate solvent molecular motion enough to overcome obstruction by solute particles.
C. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles..
D. lower than the freezing point of the solvent alone because lower temperature is required to slow solvent molecular motion enough to overcome obstruction by solute particles.
E. None of these are true.
I think the answer is D..is that right?
I would go with D also but it is a TERRIBLY confusing set of answers.
i thought it was C, it makes more sense how does a lower temperature make solvent molecules move ffaster when obstructions are in the way? that's like saying i move faster in low temperatures when walls are in the way
d is the correct answer
Yes, you are correct! The freezing point of a solution is lower than the freezing point of the solvent alone because a lower temperature is required to slow down the solvent's molecular motion enough to overcome obstruction by solute particles. This phenomenon is known as freezing point depression.
To arrive at this answer, we need to understand the concept of freezing point depression. When a solute is dissolved in a solvent, it disrupts the regular arrangement of solvent molecules. This disrupts the formation of the crystal lattice structure during freezing, making it more difficult for the solvent molecules to solidify and lowering the freezing point of the solution.
Option D correctly states that the freezing point of a solution is lower than the freezing point of the solvent alone because a lower temperature is required to slow down the solvent's molecular motion enough to overcome obstruction by solute particles.