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Molar Mass Determination by Freezing Point Depression

From and J. Chem. Ed., 82 (1), 2005, 116-119. Compiled Natalie Ulrich, (PhD)

If you’ve ever made ice cream at home, you know the recipe calls for adding salt to ice to cool down the ingredients enough for the ice cream to actually freeze. What’s up with that? Or why do road crews add salt to roads in the winter – how exactly does that help get rid of the ice? The explanations to these questions lie in colligative properties. The lab is based on applying colligative properties.

This lab packet contains an instructor guide that has the background, a student handout, and sample data.

Lab Handouts


sample image


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