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Innovating Science™ AP Chemistry Freezing Point Depression to Determine Molecular Mass

Catalog No. S001289 Shop All Aldon Products
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Class Size:
15 Lab Groups
Grade:
9 to 12
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Catalog No. Class Size Grade
S001289 15 Lab Groups 9 to 12
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WARNING: This product can expose you to chemicals including p-Dichlorobenzene and Naphthalene, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Catalog No. S001289 Supplier Innovating Science™ Supplier No. IS8014
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WARNING: This product can expose you to chemicals including p-Dichlorobenzene and Naphthalene, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Description

Explore colligative properties by measuring freezing point depression in a nonpolar solvent. By calculating constants and testing unknowns, students use real-world data to identify compounds.

  • How the kit works:
    • Molecular mass can help identify unknown compounds. In this experiment, it is determined by measuring freezing point depression, a colligative property that depends on the number of dissolved particles
    • Para-dichlorobenzene is dissolved in the nonpolar solvent 2,6-di-tert-butyl-4-methylphenol, which has a melting point of approximately 70°C, and the resulting temperature change is measured. The solvent's depression constant is then calculated, and the procedure is repeated with two unknown compounds to determine their molecular weights
  • Kit Includes:
    • 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

Specifications

Grade Level High School, Higher Ed
Grade 9 to 12
Class Size 15 Lab Groups
Product Type AP Chemistry Lab Kit
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