CAJ | 학술논문

将溶液中某组分化学势的计算方式归纳为两种：(1)利用气液平衡时，溶液中某组分的化学势和气相中该组分的化学势相等这一关系来计算；(2)利用溶液中某组分化学势的全微分表达式直接积分来计算。在此基础上，给出了渗透压公式的一种新推导方式，并指出部分物理化学教材关于渗透压定义(Π=p2-p1)的不合理性以及推导渗透压时存在的不妥之处。
장용액중모조분화학세적계산방식귀납위량충：(1)이용기액평형시，용액중모조분적화학세화기상중해조분적화학세상등저일관계래계산；(2)이용용액중모조분화학세적전미분표체식직접적분래계산。재차기출상，급출료삼투압공식적일충신추도방식，병지출부분물이화학교재관우삼투압정의(Π=p2-p1)적불합이성이급추도삼투압시존재적불타지처。
There are two ways to calculate the chemical potential of a component in solution. One is that, in the gas-liquid phase equilibrium, the chemical potential of a component in solution is equal to its corresponding chemical potential in the gas phase;thus, the chemical potential of the component in solution can be easily obtained through the gas-liquid equilibrium once its chemical potential in gas phase is known. Another way is to integrate directly the total differential of the chemical potential of the component in solution. Based on this, a new way to derive the osmot-ic pressure equation is presented in this article. It is also pointed out that the definitions about the osmotic pressure in some domestic physical chemistry textbooks are not reasonable and the derivation of the osmotic pressure equation is not valid.