测定了在恒压(100.0kPa)条件下若干含盐双液系(甲醇-水,乙醇-水,正丙醇-水)的沸点变化.实验结果表明引起溶液沸点降低"反常现象"发生的必要条件是易挥发组分被盐析或难挥发组分被盐溶.经热力学分析表明上述实验结果是一个具有普遍意义的结论.%The influence of some nonvolatile salts on boiling point of methanol-water, ethanol-water andn-propanol-water systems was determined at fixed liquid composition and given pressure (100.0 kPa).The experimental results indicate that the requisite of boiling point depression is that the more volatilecomponent must be salted out, the less volatile component must be salted in. This conclusion, basedon thermodynamical consideration, can be taken as a universal rule that governs the variation of boilingpoint when a little nonvolatile salt dissolves in liquid mixture with constant composition.
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