作者yanpoupou (痒婆婆 /c\)
看板Chemistry
标题[问题] 想请问几题有机化学
时间Sun Apr 29 01:50:59 2007
1.以下何种cpds的沸点最高?
A.m-dichlorobenzene
B.o-dichlorobenzene
C.p-dichlorobenzene
D.toluene
2.Which of the following undergoes SN1 rxn with methanol most rapidly?
A. PhCH2Br B. PhCH2CH2Br C. PhCH2=CHBr D. PhBr
O
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3.In electrophilic aromatic substitution a ─ C ─CH3 substituent on the
aromatic ring is:
A.an activator and an o,p-director
B.an activator and a m-director
C.a deactivator and a m-director
D.a deactivator and an o,p-director
4.In electrophilic aromatic substitution rxns a chlorine substituent is...
A.a deactivator and an o,p-director
B.an activator and an o,p-director
C.a deactivator and a m-director
先谢过大家了...有点搞不清楚
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◆ From: 125.225.96.141
※ 编辑: yanpoupou 来自: 125.225.96.141 (04/29 01:54)
1F：→ yanpoupou:想请问一下 答案CDCB 正确吗... 04/29 02:04
2F：推 flowerkid:1.A 2.A 3.C 4.A .....有错请指正 04/29 02:05
3F：→ yanpoupou:第一题看极性的话 是B吗@@ 04/29 02:10
4F：推 flowerkid:更正1.B o-dichlorobenzene沸点最高 04/29 02:12
5F：推 chiahaug:1.b 2.a 3.c 4.a 04/29 06:57
6F：→ greylag:chiahaug板友正确 05/01 19:51