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...
百度试题 题目按照Lewis酸碱理论,下列物质中碱性最强的是( )。? CH3NH2NH3苯胺(CH3)2NH 相关知识点: 试题来源: 解析 (CH3)2NH 反馈 收藏
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 for H3COCH3. Draw a Lewis structure for H_3CCOCH_3. Draw Lewis structure for CH_3NH_3^+. Draw the Lewis structure for BrO4-. Draw the Lewis structure for CF_2H_2. Explain how to draw Lewis structures and what they tell you. ...
【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
What is the Lewis structure for PO4 3-? What is the Lewis structure for each molecule as well as the 3-dimensional representations of the molecular structures? a. BH_3 b. NH_3 c. ClF_3 What is the lewis structure of C_{3} H N_{2} ?
Draw Lewis structures of C2HO4- and C2O42-. Draw the two possible Lewis structures for O3. 1) Between the compounds of ^(-)OH or CH_3CH_2^(-), draw the Lewis structure of the stronger base. 2) Between the compounds of NH_2^(-) or CH_3COO^(-), draw the Lewis struct...
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-...
Draw the Lewis structure of CH_2N_2. The sigma-bond network is given to you. Draw the appropriate Lewis structure corresponding to HCN. Draw the appropriate Lewis structure corresponding to I_3^-. Draw the appropriate Lewis structure corresponding to OCN^-...
百度试题 题目下列化合物,属于Lewis碱的是 A.H2OB.CH3NH2C.Cl-D.Br+相关知识点: 试题来源: 解析 ABC 反馈 收藏