CH₃（CH₂）₂CH₂+（Ⅰ）；CH₃CH+CH₂CH₃（Ⅱ）；（CH₃）₃C+（Ⅲ）三种碳正离子的稳定性顺序如何？（）

12.[填空题]-|||-_(H)_(3)-CH-C(H)_(2)-CH-CH-CH-C(H)_(3)-|||-CH3 CH2 CH2 CH3-|||-CH3

CH3 一-CH b. CH3CHCH 2CHCHCH3-|||-CH2 -CH-CH-CH3 CH3 CH3-|||-CH3 CH3-|||-CH3 CH3

【简答题】列出下列单体所组成的高聚物熔点顺序，并说明理由． CH3—CH＝CH2； CH3—CH2—CH＝CH2； CH2＝CH2 CH

CH3-|||-CH3CHCHCHCH2CH3-|||-CH3 CH2CH3 2.CH3-|||-CH3CHCHCHCH2CH3-|||-CH3 CH2CH

以下三种烷烃 CH3CH2CH2CH3①、CH3CH2CH(CH3)2② 和CH3CH2C(CH3)3③甲基面外弯曲振动分别为( )A. ①为1395cm-1

用系统命名法命名化合物-|||-用系统命名法命名化合物-|||-CH3(CH2)3CH(CH2)3CH3-|||-C(CH3)2-|||-(H)_(2)CH((

(66)解释下列事实:-|||-Br Br-|||-CH3CH=C-C H3→CH3 HBr a CH2C- - CH3 + CH3CH- -CHCH3-|||

(四)用Z,E命名法命名下列化合物:-|||-CH3 CH2CH3-|||-(1) C=C-|||-, H CH(CH3)2-|||-H CH2CH2CH3-|

-c- CH-CH3-|||-B H2C 1-|||-H-|||-CH3CH3-|||-C CH3 c- CH-CH2-|||-i H-|||-CH3CH3-|

命名下列化合物。(1)(CH3)3CC≡CCH2C(CH3)3 (4)(2)CH3CH=CHCH(CH3)C≡CCH3 (5)(3)HC≡CC≡CCH=CH2命