下列化合物按碱性由强到弱排列的次序为()。(1) CH3CH2ONa (2) (CH3)3CCH2ONa (3) CF3CH2ONa
A: (1)>(2)>(3)
B: (3)>(1)>(2)
C: (2)>(1)>(3)
D: (1)>(3)>(2)
A: (1)>(2)>(3)
B: (3)>(1)>(2)
C: (2)>(1)>(3)
D: (1)>(3)>(2)
举一反三
- 下面化合物的熔点高低次序是:( ) A: (1)>(3)>(2) B: (3)>(2)>(1) C: (1)>(2)>(3) D: (3)>(1)>(2)
- 下列化合物有(1)到(3),λmax由大到小的顺序是( ) 化合物(1)CH3(<br/>CH2<br/>)5CH3<br/>(2)(CH3)2C=CH-CH2-CH=C(CH3<br/>)2 (3)CH2=CH-CH=CHCH3 A: (1)>(2)>(3) B: (3)>(2)>(1) C: (2)>(3)>(1) D: (3)>(1)>(2) E: (1)>(3)>(2)
- 将下列化合物按碱性由强到弱排序:( )<br/>(1)二乙胺 (2)苯胺 (3)对甲基苯胺 (4)氨 (5)对硝基苯胺 A: (1)>(4)>(3)>(2)>(5) B: (2)>(4)>(3)>(1)>(5) C: (3)>(2)>(1)>(4)>(5) D: (1)>(2)>(3)>(4)>(5)
- 比较下列化合物的碱性强弱(1)脲(2)乙酰胺(3)乙胺(4)丙二酰脲 A: (1)>(2)>(3)>(4) B: (2)>(4)>(3)>(1) C: (3)>(1)>(2)>(4) D: (4)>(2)>(3)>(1)
- (1)环丁酮,(2)环戊酮,(3)3-戊酮在用氢化物还原时,活性次序为: A: (3)>(1)>(2) B: (3)>(2)>(1) C: (2)>(1)>(3) D: (1)>(2)>(3)