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Microscale Synthesis of Hexaamminechromium(III) Nitrate Using Liquid Ammonia Generated in the Laboratory

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Edward Maslowsky Jr.

Department of Chemistry, Loras College, Dubuque, IA 52001

J. Chem. Educ., 2000, 77 (6), p 760

DOI: 10.1021/ed077p760

Publication Date (Web): June 1, 2000

Section:

History, Education, and Documentation

Abstract

The previously published synthesis of hexaamminechromium(III) nitrate using liquid ammonia as the solvent is an experiment that can be used in an advanced inorganic chemistry laboratory as an example of using a nonaqueous inorganic solvent in inorganic synthesis. Potential hazards are associated with the amount of liquid ammonia used in the experiment and the need to store this corrosive material (which is also expensive to purchase). These problems can be eliminated or reduced by performing this experiment on a microscale level and generating the small amount of ammonia needed directly in the laboratory at the time of the experiment. The ammonia is generated by heating concentrated ammonium hydroxide and condensing the ammonia vapors into the reaction vessel.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Feature):

The Microscale Laboratory

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Coordination Compounds

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

Readily Made Solvated Electrons
Jorge G. Ibanez, Francisco J. Guerra-Millan, Muhamad Hugerat, Jorge L. Vazquez-Olavarrieta, Ahmad Basheer, and Riam Abu-Much
Journal of Chemical Education2011 88 (5), 670-672
- Readily Made Solvated Electrons
  Jorge G. Ibanez, Francisco J. Guerra-Millan, Muhamad Hugerat, Jorge L. Vazquez-Olavarrieta, Ahmad Basheer, and Riam Abu-Much
  Journal of Chemical Education2011 88 (5), 670-672
  The existence of solvated electrons has been known for a long time. Key methods for their production (i.e., photoionization of reducing ions, water radiolysis, and the reaction between H· and OH−) are unsuitable for most school laboratories. We describe a ...
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