应当正视教材练习题上的2处硬伤  

Two Errors in Exercises of Textbook

作　　者：刘怀乐[1] 杜文敏[1] 

机构地区：[1]重庆巴蜀中学

出　　处：《化学教育》2016年第3期76-77,共2页Chinese Journal of Chemical Education

摘　　要：指出了人教版《化学1》教材上的2处硬伤,常温常压下硫酸铜溶液浓度不可能达到2mol/L,实验时更不可能给学生1试管NO_2。实验发现,通常情况下,将1试管NO_2倒扣在水中,待液面基本稳定时,水位上升远远不止2/3试管。This paper pointed out two errors in exercises of Chemistry 2 textbook（People＇s Education Press）,the concentration of copper sulphate solution at normal temperature and pressure was impossible to achieve 2mol/L,it was not possible to give students a tube of nitrogen dioxide.Experiment showed that a tube of nitrogen dioxide was upside down in the water,when the liquid level was basically stable,the water level rose to far more than 2/3 tube.

关 键 词：硫酸铜溶液浓度 二氧化氮 四氧化二氮 离解度 溶解度 

分 类 号：G634.8[文化科学—教育学]