Homework Help: chemistry(check my work)

Posted by eng on Tuesday, April 6, 2010 at 9:03pm.

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 the asnswer is D

chemistry(check my work) - DrBob222, Tuesday, April 6, 2010 at 9:32pm
D probably is the correct answer although I would have preferred the reason to be something.......to slow solvent molecular motion enough to overcome the greater separation of the solvent molecules caused by solute particles. It the word obstruction to which I object.

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