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ERIC Number: EJ823778
Record Type: Journal
Publication Date: 2008-Dec
Pages: 2
Abstractor: As Provided
Reference Count: 10
ISSN: ISSN-0021-9584
Integrating Statistical Mechanics with Experimental Data from the Rotational-Vibrational Spectrum of HCl into the Physical Chemistry Laboratory
Findley, Bret R.; Mylon, Steven E.
Journal of Chemical Education, v85 n12 p1670-1671 Dec 2008
We introduce a computer exercise that bridges spectroscopy and thermodynamics using statistical mechanics and the experimental data taken from the commonly used laboratory exercise involving the rotational-vibrational spectrum of HCl. Based on the results from the analysis of their HCl spectrum, students calculate bulk thermodynamic properties such as internal energy, absolute entropy, molar enthalpy of formation, and Gibbs energy of formation at 25 [degree]C. This exercise serves as an opportunity for students to review the vibrational-rotational spectrum of HCl and to put in to practice their knowledge of statistical mechanics. The results show excellent agreement with values found in most introductory physical chemistry texts. This is a nice teaching tool because it uses experimental data to demonstrate the inter-relationship between quantum mechanical states and the bulk thermodynamic properties of gases. (Contains 1 table.)
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A