Optimization and Improvement of Experiments about Chemical Reaction Rate
ZHENG Min1, ZHANG Ping-Ke1, YIN Du-Lin2
1. Hunan First Normal University, Changsha 410205, China; 2. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
Abstract This paper improved experiments of chemical reaction rate for senior high school, used body temperature, room temperature, and ice temperature to control the reaction temperature of alkaline glucose solution and blue methylene blue solution, and used a self-made device to observe the rate of hydrogen production by different concentrations of dilute hydrochloric acid and zinc. The catalytic decomposition of hydrogen peroxide was controlled by EDTA sodium salt.Thus the effects of temperature, concentration and catalyst on the chemical reaction rate were revealed more vividly and scientifically.
