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ERIC Number: EJ1159458
Record Type: Journal
Publication Date: 2017-Oct
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0021-9584
Adapting and Modifying the Apparatus for Students to Accurately Determine the Freezing Point of a Solvent and Solution
Li, Shirong; Guo, Jianzhong; Wang, Kewang; Chen, Lin; Hu, Daodao; Bai, Yunshan
Journal of Chemical Education, v94 n10 p1590-1593 Oct 2017
An improved apparatus for measuring freezing points has been developed. Compared to the traditional Beckmann freezing point instrument, the improved one overcame prior difficulties with solidification of liquid and made the solid-liquid equilibrium reversible with heat compensation from a heating tube. The reliability and accuracy were carefully examined by determining the freezing point of the solvent and solution, as well as calculating the molar mass of the solute. It was found that the molar mass was in good agreement with the literature data. Thus, this improved device can effectively and successfully be used in undergraduate physical chemistry laboratory courses.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A