The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 18
(2013) pp 302-303
Determination of the Empirical Formula of Zinc Bromide Using Microwave Technology: A Simple Experiment for the Undergraduate General Chemistry Laboratory
David J. Foreman and Javier E. Horta*,†
Merrimack College, Department of Chemistry, 315 Turnpike
Street, North Andover, MA 01845; †Current address: University of
Massachusetts Lowell, Department of Clinical Laboratory and Nutritional
Sciences, 3 Solomont Way, Suite 4, Lowell, MA 01854, email@example.com
Published: 1 November 2013
Abstract. The mass and mole relationships associated with the stoichiometry of chemical reactions and the composition of chemical compounds are among the most fundamental concepts that every student in an introductory chemistry course must thoroughly learn and understand. By reacting granular zinc metal with a substoichiometric amount of a solid ionic bromine equivalent under microwave heating, the empirical formula of zinc bromide can be determined.
Key Words: Laboratories and Demonstrations; general chemistry; bromine; reactions; oxidation/reduction; stoichiometry; zinc
(*) Corresponding author. (E-mail: firstname.lastname@example.org)
A separate document of supporting materials contains a laboratory handout for students, notes on safety, instructor’s notes, and the CAS registry numbers of all reagents involved in this experiment (27 KB).