表面过剩及吉布斯吸附等温式的探讨

Surface Surplus and Gibbs Adsorption Isotherm

物理化学中溶液表面吸附的表面过剩是一个可正可负的物理量,在部分的教材中,对表面过剩公式的表达不能反映其可正可负的情况,且因引入吉布斯吸附模型,对于公式的推导繁杂、理解困难,不便讲解。因此,有必要对此进行探讨,以便帮助教学和学习。

Surface surplus of solution adsorption, which might be negative or positive, is a physical quantity in physical chemistry. But partial expression about surface surplus formula in some teaching materials couldnt reflect the fact that surface surplus can be negative or positive. Moreover, Gibbs adsorption model is complicated to derive, hard to understand and inconvenient to explain. Inorder to help teach and learn, it is necessary to discuss surface surplus and its formula.