Ozone Decomposition Data for Kinetics Exercises

TCE

The Chemical Educator

ISSN: 1430-4171 (electronic version)

Table of Contents

Abstract Volume 7 Issue 5 (2002) pp 278-283

Ozone Decomposition Data for Kinetics Exercises

Thomas J. Manning,* Brian Little, Jerry Purcell, Amy Feldman, William Parker, Katrice Register, Brandy Sumner, and Clint Schibner

Department of Chemistry, Valdosta State University, Valdosta, GA 31698, USA
Received March 4, 2002. Accepted August 10, 2002

Published online: 20 September 2002

Abstract. The goal of this paper is to provide data that can be used in a variety of exercises ranging from kinetics in general chemistry to advanced problems in physical chemistry. The data provided relates to ozone-decay kinetics in various atmospheres (O₂, N₂, Ar) as measured by ultraviolet/visible absorbance spectroscopy (UV/vis) at 254 nm. The absorbance of ozone is monitored over a 75-min time period, and by using Beer’s law the concentration is calculated. Nine data sets, each repeated three times, of absorbance measurements are provided for student exercises, and prelaboratory and postlaboratory questions are suggested.

Key Words: Laboratories and Demonstrations; general chemistry; physical chemistry; spectroscopy

(*) Corresponding author. (E-mail: tmanning@valdosta.peachnet.edu)

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