sorry i forgot add the question
The freezing point of a solution is
A. 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..
B. 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.
C. 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.
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 it's D, am i right
I can't find the question. You may want to find the question, copy it, then copy the second post and resubmit as a combined set of one.
To determine the correct answer, let's analyze the given options:
A. lower 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.
This option suggests that the freezing point of the solution is lower than that of the solvent alone because the solute particles obstruct the motion of the solvent molecules, requiring a higher temperature to overcome this obstruction.
B. 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.
This option suggests that the freezing point of the solution is higher than that of the solvent alone because a higher temperature is required to accelerate the motion of the solvent molecules enough to overcome obstruction by the solute particles.
C. 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.
This option suggests that the freezing point of the solution is lower than that of the solvent alone because a lower temperature is required to accelerate the motion of the solvent molecules enough to overcome obstruction by the solute particles.
D. lower than the freezing point of the solvent alone because a lower temperature is required to slow solvent molecular motion enough to overcome obstruction by solute particles.
This option suggests that the freezing point of the solution is lower than that of the solvent alone because a lower temperature is required to slow down the motion of the solvent molecules enough to overcome obstruction by the solute particles.
E. None of these are true.
To determine the correct answer, we need to consider the concept of boiling point elevation and freezing point depression. When a solute is added to a solvent, it disrupts the organization of the solvent particles, reducing the strength of the intermolecular forces and lowering the freezing point of the solution compared to the pure solvent. Therefore, option D is the correct answer.
So, you are correct. Option D is the correct choice.