摘要
报道了用精密pH电位法在甲醇-水混合溶剂中对樟脑酸(H2L)质子化常数的测定(25℃,I=0.10mol/LKNO3),讨论了溶剂极性对质子化常数的影响。结果表明在甲醇含量XM(%,V/V)30￣70的范围内,混合溶剂中甲醇含量对樟脑酸质子化常数(pKi)的影响呈线性关系:pK1=0.269+0.0241×XM,pK2=4.404+0.0316×XM,实验数据处理用程序Hyperquad完成。
The protonation constants of camphoric acid were determined in water-methannol mixture by potentiometry （25℃, I=0.20 mol·L -1KNO3）. Computer program GLEE ／HYSS and HYPERQUAD were used for calculation. The effect of methanol solvent on protonation constants pKi and the methanol content XM （ % ,V/V） in the mixture.
出处
《天水师范学院学报》
2006年第2期52-53,共2页
Journal of Tianshui Normal University
关键词
樟脑酸
质子化常数
PH电位法
camphoric acid
protonation contants
potentiometry
