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Innovating Science Freezing Point Depression AP Chemistry Kit

Innovation Science Freezing Point Depression AP Chemistry Kit 2134289
Item #: 2134289
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Students will learn to determine the molecular mass of an unknown by measuring the effect the compound has on the freezing point of a solvent in which the unknown is dissolved.

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About This Item

Description

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 which 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 70°C. 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.

Features

  • Provides hands-on science learning for students
  • Easy to use kit is perfect for students and beginners
  • Ideal for classrooms, labs and home school lessons
  • Includes:
    • 02 x 25g Di-Tert-Butyl-4-Methylphenol Crystals
    • 1 x 25g p-Dichlorobenzene Crystals
    • 1 x 25g Stearic Acid Flakes
    • 1 x 25g Naphthalene Flakes
    Shipping Details
    Shipping Type: parcel
    Free Shipping: true
    Attachments
    Specifications
    Maximum Age: 18+
    Maximum Grade Level: HS+
    Allergens: Contains No Allergens
    Certifications: ISO Certified
    Grade Level: Grades 6-12
    Safety: Caution Icon. No Choking Hazard
    SUOM Description: Each
    Age Range: 12+
    Brand Name: Innovating Science
    Description: Freezing Point Depression
    California Proposition 65 Warning:
    Caution Icon.WARNING: This product can expose you to chemicals known to the State of California to cause cancer.  For more information go to www.P65Warnings.ca.gov.
    Innovating Science Freezing Point Depression AP Chemistry Kit