如何查一种物质是否能与水形成共沸物?所谓共沸物,所指的是当两种或多种不同成分的均相溶液,以一个特定的比例混合时,在固定的压力下,仅具有一个沸点,此时这个混合物即称做共沸物。一般存在的条件可依据拉乌尔定律和道尔顿定律推得。The condition of existence follows from the equality of pressures in vapour-liquid equilibrium using Raoult and Dalton laws for real mixtures and imposing the equality of compositions in liquid and vapour phases.The condition relates activity coefficients in liquid phase to total pressure and the vapour pressures of pure components.查看更多