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近年来许多人对二元溶液盐效应作了研究,提出了二元溶液的盐效应与盐的浓度有某种线性关系,本文着重研究了几个二元溶液恒沸物及其两侧溶液的沸点在加盐(KCl)前后的变化.1 实验药品及方法C_2H_5OH CCl_4 CHCl_3 C_6H_6 C_6H_(12) KCl以上药品均为AR试剂并经过常规处理.二元溶液的沸点用沸点仪测定,由多级缓冲瓶构成的恒压系统与沸点仪相连,压力恒定在760±1mmHg,U型管压差计经温度、纬度,海拔高度及读数校正.溶液用电热丝直接加热,调节输入电压维持回流量约为50滴/分,气液平衡半小时后由1/10℃温度计测量沸腾温度,读数经露颈校正.溶液组成由阿贝折射仪测定,恒沸物用填料式精馏柱在恒定760±1mmHg压力下经多次精馏而得.
In recent years, many people have studied the salt effect of the binary solution, and proposed that the salt effect of the binary solution has a certain linear relationship with the salt concentration. In this paper, several binary solutions of azeotropes and solutions on both sides Changes in boiling point before and after the addition of salt (KCl) .1 Experimental drugs and methods C_2H_5OH CCl_4 CHCl_3 C_6H_6 C_6H_ (12) KCl The above drugs are AR reagents and subjected to routine treatment.The boiling point of the binary solution was measured by a boiling point meter, Bottle constant pressure system connected to the boiling point instrument, the pressure constant at 760 ± 1mmHg, U-tube pressure gauge by the temperature, latitude, altitude and reading correction. The solution is heated directly with electric heating wire, adjust the input voltage to maintain the return of about 50 drops / min, gas and liquid equilibrium after half an hour by the 1/10 ℃ thermometer to measure the boiling temperature, the reading by the exposed neck calibration solution composition determined by Abbe refractometer, azeotropic distillation packing column at a constant 760 ± 1mmHg Under pressure from many distillation derived.