Applying Handheld Technology-Based Experiment to Explore the Influence of Molarity of Chlorid Ion on Chlorid Ion Effect: Reaction of Magnesium and Hydrochloric Acid
MAI Yu-Hua1, QIAN Yang-Yi2**
1. School of Psychology, South China Normal University, Guangzhou 510631, China;
2. School of Chemistry, South China Normal University, Guangzhou 510006, China
Abstract The existence of chlorid ions could accelerate the rate of some chemical reactions involving metal, which is called “chlorid ion effect”. Taking the reaction of magnesium and hydrochloric acid as an example, the influence of molarity of chlorid ion on chlorid ion effect was explored by applying handhold technology-based digital experiment. They are found that: (1) The chemical reaction rate and the chloride ion effect increase while molarity of chlorid ion is enlarged in the range of 0.03~0.83 mol/L. (2) Molarity of chloride ion is one of the factors that affect the chemical reaction rate. Some suggestions for teaching and research regarding this experiment in the future are given.
MAI Yu-Hua, QIAN Yang-Yi. Applying Handheld Technology-Based Experiment to Explore the Influence of Molarity of Chlorid Ion on Chlorid Ion Effect: Reaction of Magnesium and Hydrochloric Acid[J]. Chinese Journal of Chemical Education, 2020, 41(19): 98-102.
