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ERIC Number: EJ829109
Record Type: Journal
Publication Date: 2008-Aug
Pages: 2
Abstractor: As Provided
Reference Count: 7
ISBN: N/A
ISSN: ISSN-0021-9584
An Inexpensive Solution Calorimeter
Kavanagh, Emma; Mindel, Sam; Robertson, Giles; Hughes, D. E. Peter
Journal of Chemical Education, v85 n8 p1129-1130 Aug 2008
We describe the construction of a simple solution calorimeter, using a miniature bead thermistor as a temperature-sensing element. This has a response time of a few seconds and made it possible to carry out a thermometric reaction in under a minute, which led to minimal heat losses. Small temperature changes of 1 K associated with enthalpies of solution or enthalpies of neutralization can be measured with accuracy better than 1%. The degree of accuracy depended on how many measurements were made and gave the student an opportunity to think about different sources of error. (Contains 1 figure.)
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: High Schools; Higher Education; Postsecondary Education; Secondary Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A