单项选择题
卤代烃亲核取代反应速率由快到慢顺序正确的是()
A.R-CH=CH-CH2-X〉R-CH=CH-X〉RCH2-X
B.R-CH=CH-X〉R-CH=CH-CH2-X〉RCH2-X
C.R-CH=CH-X〉RCH2-X〉R-CH=CH-CH2-X
D.R-CH=CH-CH2-X〉RCH2-X〉RC6H5-X
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单项选择题
A.R-CH=CH-CH2-X〉R-CH=CH-X〉RCH2-X
B.R-CH=CH-X〉R-CH=CH-CH2-X〉RCH2-X
C.R-CH=CH-X〉RCH2-X〉R-CH=CH-CH2-X
D.R-CH=CH-CH2-X〉RCH2-X〉RC6H5-X
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