Freezing Point Depression AP Chemistry Demonstration Kit

Freezing Point Depression AP Chemistry Demonstration Kit

Overview

Freezing Point Depression AP Chemistry Classroom Kit

Warnings

Freezing Point Depression AP Chemistry Demonstration Kit

Regular price $49.95 In Stock
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Overview

Freezing Point Depression AP Chemistry Classroom Kit

Warnings

Product Details

Molecular mass is a parameter, which is useful in determining the identity of an unknown compound. One technique to determine the molecular mass of an unknown is to measure the effect the compound has on the freezing point of a solvent in whcih the unknown is dissolved. The freezing point of a solution is a colligative property. That is, it is a property which varies based on the number of particles (solute) dissolved in the solvent and not on the chemical makeup of the particles themselves. Other colligative properties, which also can be used to determine molecular mass, are osmotic pressure, vapor pressure and boiling point.

The nonpolar solvent 2,6-di-tert-butyl-4-methylphenol has a freezing point of approximately 70C. A quantity of para-dichlorobenzene will be dissolved in the solvent and the effect on the freezing point determined. The freezing point depression constant will be calculated for the solvent. The experiment will be repeated with each of two unknowns and the molecular weight of the unknowns will be determined from the freezing point depression.

Contains:
2 x 25 g Di-Tert-Butyl-4-Methylphenol Crystals
1 x 25 g p-Dichlorobenzene Crystals
1 x 25 g Stearic Acid Flakes
1 x 25 g Naphthalene Flakes

Each bottle of our reagents come standard with an MSDS sheet included. If you require a copy of this prior to purchase, please contact us.

Additional Information

SKU

ALDIS8014

Weight

3.2 lb

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