电导法测定二级反应速率常数LabVIEW7．0程序设计与应用(英文)

Design and application of program based on LabVIEW 7.0 for determining rate constant for second-order reaction

研制了基于LabVIEw 7．0 Express的处理电导法测定二级反应速率常数实验数据程序,对反应物初始浓度相等和不等条件下均可处理,避免了人工处理数据的复杂繁琐过程及人工处理过程中的人为误差,提高了实验结果的准确性和重现性。应用结果表明:该程序界面友好,数据处理可视化性强,数据处理结果与文献值比较,反应速率常数k的相对误≤3％,Ea的相对误差<4．5％,结果令人满意。

LabVIEW 7.0 Express-based program for determining second-order reaction rate constant by electric conductivity is designed. It can process the data with both equality and inequality of initial concentrations, avoiding complex process of manual processing data and personal error produced in data processing by handwork and improving veracity and repeatability of the experimant results. The result of application indicates that the program has advantages of friendly interface and good visibility of experimental data. Comparing with the value of reference, RSD of rate constant is not higher than 3% and RSD of activation energy is less than 4.5%. The results are satisfying.