温度对化学平衡移动影响的实验设计  

Designing an Experiment to Study the Effects of Temperature on the Shift of the Chemical Equilibrium

作　　者：毛卫娟[1] 周鹏[1] 金鑫[1] 冯长君[1] 冯惠[1] 

机构地区：[1]徐州工程学院化学化工学院,江苏徐州221111

出　　处：《广州化工》2015年第2期23-24,共2页GuangZhou Chemical Industry

基　　金：江苏省化学化工基础实验中心课题(2014-9;10;34);徐州工程学院教研课题(YGJ1395;SYZX1426)

摘　　要：根据温度对化学平衡移动影响的原理:升高温度,平衡向吸热方向移动;降低温度,平衡向放热方向移动。我们设计了利用颜色变化来反映温度变化的实验:绿色的水合氯化镍(含乙醇)溶液受热转变为黄色的氯化镍溶液;受冷颜色随之逆转,由黄色的氯化镍溶液转变为绿色的水合氯化镍溶液。According to the theory of the effect of temperature on the chemical equilibrium,the chemical equilibrium shifted to the endothermic direction with the increase of the temperature. However,the exothermic direction was shifted with the decrease of the temperature. An experiment was designed to study the change of the temperature according to the color. The green hydrated nickel chloride（ including ethanol） solution was changed to the yellow nickel chloride when it was heated,however,an opposite result was proposed if it was cooled.

关 键 词：实验设计 化学平衡移动 温度 氯化镍 

分 类 号：G642.3[文化科学—高等教育学] G633.8[文化科学—教育学]