CAJ | 학술논문

对物理化学实验中最大泡压法测定溶液表面张力的实验步骤进行改进，对原采用的测定含量范围进行调整，优选出适宜测定乙醇水溶液的测定含量范围．采用Origin软件进行数据处理，依据希什柯夫斯基模型建立对数函数关系并对σ-c关系进行曲线拟合，具有较小的偏最小二乘偏差和较高的相关系数，体现出乙醇水溶液表面张力与乙醇溶液的量浓度的对数相关，并得到准确的数据处理结果．实验结果表明，改进后的实验数据处理方法测定的溶质分子横截面积与文献理论值吻合，该方法有助于提高解析数据的能力．
대물이화학실험중최대포압법측정용액표면장력적실험보취진행개진，대원채용적측정함량범위진행조정，우선출괄의측정을순수용액적측정함량범위．채용Origin연건진행수거처리，의거희십가부사기모형건립대수함수관계병대σ-c관계진행곡선의합，구유교소적편최소이승편차화교고적상관계수，체현출을순수용액표면장력여을순용액적량농도적대수상관，병득도준학적수거처리결과．실험결과표명，개진후적실험수거처리방법측정적용질분자횡절면적여문헌이론치문합，해방법유조우제고해석수거적능력．
To determine the ethanol aqueous solution surface tension experiment by maximum bubble method in the physical chemistry experiments, improve the experiment procedure, adjust the concentration range of the originally used, and re-select for the appropriate concentration range, the methods of nonlinear least squares curve fitting are used with Shishkowski model to improve processing data of by Origin 7.5 （ or 8. 0） software, Using this model to fit σ- c curve can reflect the relationship of the surface tension and the concen tration of ethanol solution, to improve the accuracy of data processing. The experimental result shows that the cross-sectional area of ethanol molecule is more accurately calculated by experiment, and achieves good teaching effect.