摘要
无机化学实验教材中“置换法测定摩尔气体常数”的实验,采用镁置换法或铝置换法.在相同实验条件下,通过比较上述两种方法的测定结果的相对误差,发现铝置换法的相对误差较小.针对铝置换法,在教材所列条件的允许范围内,用正交设计方法探讨最佳实验条件.实验研究表明,铝置换法最佳条件是：0.0300g铝片,5mL7mol/LHCl.
In inorganic chemistry experiment teaching material, ＂the Measurement of the Molar Gas Constant by Displacement method＂ uses the magnesium method of substitution or the aluminum method of substitution. Under the same experimental conditions, through comparison of the relative errors of experimental results, the relative errors of the aluminum substitution method are fewer. In view of the aluminum substitution method as specified in the teaching material, the best experimental conditions using the orthogonal method were discussed. The experimental study indicated that the aluminum method of optimum substitution condition is 0. 0300g aluminum sheet, 5mL 7mol/L HCl.
出处
《陇东学院学报（自然科学版）》
2007年第1期51-53,共3页
Journal of Longdong University:Natural Science Edition
关键词
置换法
摩尔气体常数
正交设计
displacement method
molar gas constant
orthogonal design
