【摘 要】
：
本文提出一种测定显色反应焓变的简单实验方法 ,推导出吸光度与温度的关系式 ,用Tween 80介质中的硫氰酸钴 (Ⅱ )配合物显色反应验证了关系式的线性关系 ,得到相关系数 r为 0
【机 构】
：
大连理工大学生物化工研究所!116012大连,大连理工大学生物化工研究所!116012大连,辽宁师范大学化学系!116029大连
论文部分内容阅读
本文提出一种测定显色反应焓变的简单实验方法 ,推导出吸光度与温度的关系式 ,用Tween 80介质中的硫氰酸钴 (Ⅱ )配合物显色反应验证了关系式的线性关系 ,得到相关系数 r为 0 995 7,ΔH =- 44 7kJ·moL-1,同Van′tHoff方程得到的结果基本一致。
A simple experimental method for determining the enthalpy change of chromogenic reaction is proposed in this paper. The relationship between absorbance and temperature is deduced. The linear relationship of the relationship is verified by the color reaction of cobalt (II) thiocyanate compound in Tween 80 medium. The correlation coefficient r is 0 995 7, ΔH = - 44 7kJ · moL-1, which is basically the same as the result of Van’tHoff equation.
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