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Determination of the Formula of a Hydrate: A Greener Alternative

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Marc A. Klingshirn , Allison F. Wyatt , Robert M. Hanson and Gary O. Spessard

Department of Chemistry, St. Olaf College, Northfield, MN 55057

J. Chem. Educ., 2008, 85 (6), p 819

DOI: 10.1021/ed085p819

Publication Date (Web): June 1, 2008

Abstract

We are currently in the process of incorporating green chemistry throughout the chemistry curriculum. In this article we describe how we applied the principles of green chemistry in one of our first-semester general chemistry courses, specifically in relation to the determination of the formula of a hydrate. We utilize a copper hydrate salt that shows both a visual color change upon dehydration and ease of rehydration upon exposure to steam.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Laboratory Instruction

Keywords (Feature):

Green Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Gravimetric Analysis

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

Oven versus Bunsen Burner When Heating Copper(II) Chloride Dihydrate
Michael C. Wirtz
Journal of Chemical Education2008 85 (10), 1345
- Oven versus Bunsen Burner When Heating Copper(II) Chloride Dihydrate
  Michael C. Wirtz
  Journal of Chemical Education2008 85 (10), 1345
  In “greening up” the classical stoichiometry experiment where students determine the formula of copper(II) chloride dihydrate, it is critical that teachers and instructors use a 110°C oven rather than a Bunsen burner. Copper(II) chloride dihydrate ...
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