高中化学知识总结离子共存问题小结.docx
《高中化学知识总结离子共存问题小结.docx》由会员分享,可在线阅读,更多相关《高中化学知识总结离子共存问题小结.docx(6页珍藏版)》请在得力文库 - 分享文档赚钱的网站上搜索。
1、精品名师归纳总结高中化学学问总结离子共存问题小结(Summary of chemistry knowledge in Senior High School summary of ion coexistence)Summary of chemistry knowledge in Senior High School: summaryof ion coexistence1. Colorless transparent conditional typeIfthe titleis limited,is not colorlesssolutioncontaining nonferrousions,nam
2、ely Fe2+ lightgreen,Fe3+ yellow,Cu2+ blue,MnO4purpleplasma. Iftransparent,the solutiondoes not form cloudy or precipitate irrespective of the color ofthe solution. Such as Ag+ and Cl -, br,I,Ca2+, SO42- and SO42-;CO32; Ba2+ and CO32, SO32, etc.thereaction of SO42 - in aqueous solution, precipitation
3、 to produce turbid or obvious, they cannot coexist a lot.Example 1. in a colorless transparent solution, the following groups of ions can coexist in large numbersA.H+, Cl -, Ba2+, CO32B.Ag+, I, K+, transport are No3 C.K+, oh -, Cl -, Na+D.Fe3+, Cl -, transport are No3, Na+The correct option should m
4、eet two conditions: colorless,transparentand able to coexistin largequantities.The answer可编辑资料 - - - 欢迎下载精品名师归纳总结is C.Two. Acid condition typeA commondescriptionof strongacidicsolution,PH=1solution, PHcan make the litmusred solution,purplelitmussolutionred solution, methylorange red solution,adding
5、magnesium powder can release hydrogen solution.Ifthe titleisdefinedin acidicsolution,the solutionin the presence of H+, which does not contain large amounts of OH -ions and weak acid such as CO32, SO32,S2 -, F -, ClO -, CH3COO -, PO43 -, AlO2 -, SiO32 -, and acidradical ions such as HCO3 -, HSO3 -,
6、HS -, HPO42 -, H2PO4 -, etc of weak acids.Example 2. In a pH=1 solution, a large number of ions can coexistA.K+, Na+, SO42 -, SO32 B.NH4+, Mg2+, SO42 -, Cl - C.Na+, K+, HCO3, ClD.K+, Na+, AlO2 and transport are No3Analysis: the correct option should satisfy two conditions, pH=1 a large number of H+
7、exists and a large number of coexistence. The answer is B.可编辑资料 - - - 欢迎下载精品名师归纳总结Three. Alkaline conditioned typeA common description of strong alkaline solution, PH=14solution,PHcan makethe litmusblue solution,red litmusblue solution and phenolphthalein red solution, methyl orangeyellow solution,
8、adding aluminum powder generated afterreactionAlO2 solution,which can dissolveAl OH 3 and H2SiO3 dissolved in solution etc.If the title is defined in the solution alkaline solution inOH, which does not contain large amounts of cationic H+, weakbase such as NH4+, Mg2+, Ag+, Al3+,Cu2+, Fe2+, Fe3+ and
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 高中化学知识总结离子共存问题小结 高中化学 知识 总结 离子 共存 问题 小结
限制150内