近化学专业“液体物性测定”综合实验研究

通过物性测定综合实验,判定无色透明纯液体A和B。综合运用数字式真空计测定不同温度下纯液体A和B的饱和蒸气压,用图解法求得该液体在实验温度范围内平均摩尔汽化热与正常沸点;用最大泡压法测定液体A和B的表面张力;用阿贝折光仪测定A和B液体的摩尔折光率等参数。系列物化综合探索试验显示,液体A应是环已醇,而液体B应是环已烷。

Comprehensive Experimental Study on Measuring the Properties of Liquid A and B

The material has its fixed physical properties at a certain temperature, so it can be identified by physical properties. In this paper, saturated vapor pressures of pure liquid A and B under different temperatures were measured by the digital vacuum gauge; their normal boiling points and average molar heat of vaporization in the experimental temperature range were obtained by the graphical method; the surface tensions of liquid A and B were measured by the maximum bubble pressure method; the refractive indexes of liquid A and B were measured by Abbe refractometer. Series of experiments show that the liquid A is cyclohexanol, and liquid B is cyclohexane.