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ERIC Number: EJ820741
Record Type: Journal
Publication Date: 2007-Mar
Pages: 3
Abstractor: As Provided
Reference Count: 14
ISBN: N/A
ISSN: ISSN-0021-9584
Introduction of Differential Scanning Calorimetry in a General Chemistry Laboratory Course: Determination of Thermal Properties of Organic Hydrocarbons
D'Amelia, Ronald; Franks, Thomas; Nirode, William F.
Journal of Chemical Education, v84 n3 p453-455 Mar 2007
In first-year general chemistry undergraduate courses, thermodynamics and thermal properties such as melting points and changes in enthalpy ([Delta]H) and entropy ([Delta]S) of phase changes are frequently discussed. Typically, classical calorimetric methods of analysis are used to determine [Delta]H of reactions. Differential scanning calorimetry (DSC) is a rugged, easy-to-use instrumental method for thermal analysis determinations. DSC has become more commonly used in the chemistry curriculum, finding its way into the physical chemistry, analytical chemistry, and even in some general chemistry courses. The work described herein discusses the use of DSC in a general chemistry laboratory course to determine thermal properties such as melting points, [Delta][subscript fusion]H, [Delta][subscript fusion]S, and introduce the concept of polymorphism for organic hydrocarbons. (Contains 3 figures and 2 tables.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A