下列说法不正确的是( ) A. 聚合物可由单体CH3CH=CH2和CH2=CH2加聚制

 下列说法不正确的是(  )

A. 聚合物可由单体CH3CH=CH2和CH2=CH2加聚制得

B. 1 molCH3COOH与1mol CH3CH2OH在浓硫酸共热下生成的乙酸乙酯分子数为NA

C. 乙醇、苯酚、乙酸都有羟基,但是羟基上的H活泼性不同,主要是基团之间相互影响造成的

D. 等物质的量的乙炔和乙醛分别充分燃烧,所耗用氧气的量相同

答案

【答案】B

【解析】A.中主链含4个C,为加聚反应产物,由添键断键可知由两种烯烃单体加聚生成,则两种单体为CH3CH=CH2和CH2=CH2,A正确;B.水酯化反应是可逆反应,生成的乙酸乙酯小于1mol,B错误;C.乙醇、苯酚、乙酸都有羟基,酸性为乙酸>苯酚>乙醇,这主要是基团之间相互影响造成的,C正确;D.乙醛可以看做C2H2·H2O,因此等物质的量的乙炔和乙醛分别充分燃烧,所耗用氧气的量相同,D正确;答案选B。

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