摘要
苏教版《化学2》化学反应限度一节用'2Fe3++2I-=2Fe2++I2'的反应为例来引导学生认识可逆反应,但是用KSCN溶液真的能检验溶液中剩余的Fe3+吗?通过理论计算和实验验证得出了一致的结论,并找到一个更具有代表性的可逆氧化还原反应来引入反应限度的概念。
The section of the limit of chemical reaction in chemistry 2 textbook published by Jiangsu Education Press take'2 Fe3++2 I-=2 Fe2++I2'as an example to guide students to understand reversible reaction.However,is it really possible to detect the residual Fe3+with KSCN?This paper gives an answer both by theoretical calculation and experiment,and find a more typical reversible redox reaction instead of the above one.
作者
骆无忌
LUO Wu-Ji(Zhuji Ronghuai School,Zhuji 311800,China)
出处
《化学教育（中英文）》
CAS
北大核心
2019年第19期80-83,共4页
Chinese Journal of Chemical Education
关键词
化学反应限度
理论计算
三价铁离子检验
limit of chemical reaction
theoretical calculation
detection of Fe3+
