百度试题 题目按照Lewis酸碱理论,下列物质中碱性最强的是( )。? (CH3)2NH苯胺CH3NH2NH3 相关知识点: 试题来源: 解析 (CH3)2NH 反馈 收藏
网友 1 最佳答案 回答者:网友碱性顺序是 (CH3)2NH > CH3杀NH2 > NH3pkb分别是3.27、3.34和4.75因为甲基是给电子基,所以氮上甲基的引入会增加氮的电子云密度,使孤对电子能量升高,碱性增强。印但是这个规律不能推广到三甲胺(pkb=4.20),因为三个甲基产生较大的位阻妨碍了模京知洲出垂企氮给出其孤对电子。我...
碱性顺序是 (CH3)2NH > CH3NH2 > NH3 pkb分别是3.27、3.34和4.75 因为甲基是给电子基，所以氮上甲基的引入会增加氮的电子云密度，使孤对电子能量升高，碱性增强。但是这个规律不能推广到三甲胺（pkb=4.20），因为三个甲基产生较大的位阻妨碍了氮给出其孤对电子。
Draw the Lewis structure and Molecular model for O_2. Draw a Lewis structure for C_4H_8CHCH_2. Draw the Lewis structure for CH3NH(CH2)2CH3. Draw Lewis structure for CH_3NH_3^+. Draw the Lewis structure for P 4 . Draw the Lewis structure for SCN^-. ...
What is the Lewis structure for F2O? What is the Lewis structure for CH3Br? What is the Lewis structure of BeCl2? What is the Lewis structure for XeF4? What is the Lewis structure of OF2? What is the Lewis structure of ICl5?
A. Draw the correct Lewis structure of CH3CONH2. B. Which orbitals form the sigma bond between the carbons? Lewis Structure: It can be used to represent any bonded molecule or a coordination complex. It clearly shows the lone pairs and bond pairs pr...
【题目】胺是有机碱。甲胺(CH3NH2)是最简单的胺。(1)写出甲胺及其共轭酸甲基铵离子的Lewis 结构。(2)描述氮在甲胺和甲基铵离子中的局部几何结构和杂化情况。(3
指出下列化合物中,哪些是Lewis酸,哪些是Lewis碱?并扼要说明理由。(1)CH3NH2 (2)CH3OH (3)ZnCl2 (4)(CH3)3C+ (5)HC≡C-相关知识点: 试题来源: 解析 Lewis酸:具有空轨道,可以接受电子(3)ZnCl2 (4)(CH3)3C+ Lewis碱:含有未成键电子对(1)CH3NH2 (2)CH3OH (5)HC≡C-...
Answer to: Draw the Lewis structure for HCN. Determine the number of electron groups, the electron geometry, and the molecular shape. Is it polar...
This bonding pattern can be recognized by the 1:1:2 pattern of singlets in the 19F NMR and by a strong infrared band at 1750-1730 cm-1 due to the (CF3CO)2CH fragment. The structure of Pd(F6acac)2路(CH3)2NH (5) was determined by single-crystal X-ray diffraction. Crystal data:...