摘要
在不同离子强度下，测定了过二疏酸钾与碘化钾反应速度常数，利用Ｅｙｒｉｎｇ’ｓ公式计算反应过程的活化参数。研究了离子强度对化学反应活化参数的影响。结果表明活化参数（Ｅａ、Δ￣≠Ｈ＿ｍ、Δ￣≠Ｓ＿ｍ）与离子强度（Ｉ）存在着较好的线性关系，熵效应起主导作用。
Rate constants of the chemical reaction between potassium persulfate and potassium iodide have been determined at various ionic strengths.Activation parameters of the reaction were calculated using Eyring equation and the effects of ionic strength on the activation parameters of the reaction investigated.Experimental results showed that there exists a good linear relationship between the activation parameter(Ea、Δ￣≠H_m andΔ￣≠S_m)and ionic strength.It suggests that,in this case,the entropy effect plays a dominant role.
出处
《华南师范大学学报（自然科学版）》
CAS
1995年第2期46-54,共9页
Journal of South China Normal University(Natural Science Edition)
关键词
离子强度
过二硫酸钾
碘化钾
活化参数
反应速度
activation parametrs
ionic strength
potassium persulfate
potassium iodide
