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An Inexpensive Solution Calorimeter

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Emma Kavanagh , Sam Mindel , Giles Robertson and D. E. Peter Hughes

Westminster School, London SW1P 3PB, United Kingdom

J. Chem. Educ., 2008, 85 (8), p 1129

DOI: 10.1021/ed085p1129

Publication Date (Web): August 1, 2008

Section:

History, Education, and Documentation

Abstract

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.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Laboratory Instruction

Keywords (Feature):

Cost-Effective Teacher

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Acids / Bases

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Replacement of Coffee Cup Calorimeters with Fabricated Beaker Calorimeters
John J. Stankus and Jennifer D. Caraway
Journal of Chemical Education2011 88 (12), 1730-1731
- Replacement of Coffee Cup Calorimeters with Fabricated Beaker Calorimeters
  John J. Stankus and Jennifer D. Caraway
  Journal of Chemical Education2011 88 (12), 1730-1731
  A reusable solution calorimeter for introductory chemistry laboratory classes was demonstrated. This calorimeter was fabricated from readily available polypropylene Tri-Pour beakers nested together. The nested Tri-Pour beaker calorimeter showed similar ...
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