Thermokinetics: Iodide-Catalyzed Decomposition Kinetics of Hydrogen Peroxide An Initial Rate Approach

摘要

Typically, the reaction kinetics is determined by measuring thevolume of 0_2(g) at constant pressure (1-3) or the atconstant volume (3-5). In this article, we describe a temperature-based determination of the kinetics using the method of initialrates. Small volumes of reagents (5 mL total volume) are addedto a microcalorimeter and the temperature, T, is measured as afunction of time, t, using a datalogger and temperature sensor. Atypical measurement takes less than 15 seconds. The dataloggerhas a built-in linear regression analysis functionality that allowsimmediate determination of the initial rate.