减少醋酸α和K_a测定系统误差的研究  

Reduce the Acetic Acid α to Measurement the Research of The system Error Margin With the K_a

作　　者：刘亚芬[1] 

机构地区：[1]沈阳大学自然科学系,辽宁沈阳110016

出　　处：《沈阳教育学院学报》2005年第2期115-116,共2页Journal of Shenyang College of Education

摘　　要：在化学实验中有二类误差,一是系统误差,二是偶然误差,系统误差是测定中产生误差的主要来源,也是影响测定结果的主要因素,如何抓住实验关键,采取有效措施,减少实验系统误差,使测得的数据更接近理论值,是实验课应重视的问题。笔者以醋酸电离度和电离常数的测定为例,进行研究。There is two error margins in chemistry experiment, an is data that system error margin, two is an accidental error margin, the system error margin is a main source to measurese the inside creation error margin, is also a main factor to affect the measurement result, howing to hold tight to experiment the key, adopting the valid measure, reducing to experiment the system error margin, making measure even near to the theories value, is a problem to experiment lesson should value.The writer is take acetic acid electricity leave a measurement for with giving or get an electric shock to leave the constant as an example, proceeding to study and discuss.

关 键 词：电离度 电离常数 系统误差 准确度 稀释 规范 

分 类 号：O611.6[理学—无机化学]