3++2I-=2Fe2++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."/>
Abstract The section of the limit of chemical reaction in chemistry 2 textbook published by Jiangsu Education Press take "2Fe3++2I-=2Fe2++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.