论文部分内容阅读
用静态法测定纯液体饱和蒸汽压,并通过克-克(claus-clapeyron)方程的计算,求得该液体的汽化热(△H),是物理化学中热力学教学实验内容之一。该实验过程涉及到真空和温控的操作技术,更主要是怎样正确测定温度与压力相对应的系列数据,从而获得准确的实验结果。我们针对实验中尚存在的问题,对原装置作了修改。改进了汽液平衡和测温方式,用标准玻璃磨口连接各组件,组装方便,全过程的实验操作约1小时结束。
The saturated vapor pressure of pure liquid is determined by the static method. The heat of vaporization (△ H) of the liquid is obtained by the calculation of the claus-clapeyron equation, which is one of the teaching contents of thermodynamics in physical chemistry. The experimental process involves the operation of vacuum and temperature control technology, more mainly how to correctly determine the temperature and pressure corresponding series of data, so as to obtain accurate experimental results. We have to modify the original device for the remaining problems in the experiment. Improved vapor-liquid balance and temperature measurement methods, the standard glass grinder connected to the various components, easy assembly, the whole process of experimental operation of about 1 hour.