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Unformatted text preview: very close then it the experiment may happen too quickly and the temperatures harder to determine exactly. I would also consider the solvents molecular weight because too large or small numbers could make calculations more difficult and less accurate. IV. Using Freezing Point to Assess Purity If a substance is believed to have a certain identity then its freezing point depression can be determined experimentally. This experimentally determined freezing point can be compared to the accepted value of the freezing point depression of the pure substance and if it is very close then it can be considered pure. V. Limitations of this Procedure If the actual molecular weight was 75 g/mol it would be difficult to calculate the molecular weight of a compound. This number would be close to the difference of the temperatures and the molality and cause very small numbers....
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