Chem Lab 4

Chem Lab 4 - Students TAs name Louis Scerbo Name Evan Kahl Section CHEM101-92H Experiment#4 Date of the experiment Determination of Molar Mass by

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Student’s TA’s name: Louis Scerbo Name: Evan Kahl Section # CHEM101-92H Experiment #4 Date of the experiment: 11/11/2010 Determination of Molar Mass by Freezing Point Depression Drexel University Fall 2010
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INTRODUCTION The freezing point of a substance is known as a colligative property. As such, the freezing point of a substance is not dependent on the amount of substance that is present, it will always be the same regardless of how much of the substance there is. However, when a substance is put into solution (as the solvent), the freezing point of the solution drops as solute is added. This relationship is modeled by . The change in temperature of the freezing point is directly related to the molality of the solution. The constant k f is the relationship between molality and the change in freezing point. Based on this relationship, the more of a solute is added to a solution, the higher the molality the solution has, and thus the freezing point is even lower. As is the case in this lab, this equation can be
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This note was uploaded on 10/07/2011 for the course CHEM 101 taught by Professor Multipleprofs during the Fall '07 term at Drexel.

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Chem Lab 4 - Students TAs name Louis Scerbo Name Evan Kahl Section CHEM101-92H Experiment#4 Date of the experiment Determination of Molar Mass by

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