| 应用Origin软件处理乙醇水溶液表面张力实验数据 |
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| 引用本文： | 段德良,信文瑜,屈庆,曹秋娥.应用Origin软件处理乙醇水溶液表面张力实验数据[J].昆明师范高等专科学校学报,2011(6):103-105. |
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| 作者姓名： | 段德良 信文瑜 屈庆 曹秋娥 |
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| 作者单位： | 云南大学化学科学与工程学院化学化工实验教学中心,云南昆明650091 |
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| 基金项目： | 云南大学教学改革研究资助项目（200927） |
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| 摘 要： | 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．
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| 关 键 词： | 物理化学实验 最大泡压法 表面张力 数据处理 |
Experimental Data of Ethanol Aqueous Solution Surface Tension Dealt by Origin Software |
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| DUAN De-liang,XIN Wen-yu,QU Qing,CAO Qiu-e.Experimental Data of Ethanol Aqueous Solution Surface Tension Dealt by Origin Software[J].Journal of Kunming Teachers College,2011(6):103-105. |
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| Authors: | DUAN De-liang XIN Wen-yu QU Qing CAO Qiu-e |
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| Institution: | ( Experiment Center of Chemistry and Chemical Engineering, College of Chemical Science and Technology, Yunnan University, Yunnan Kunming 650091, China ) |
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| Abstract: | 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. |
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| Keywords: | physical chemistry experiments maximum bubble method surface tension data processing |
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