根据有机物分子式可知C
11H
16不饱和度为4,不能因反应而使溴水褪色,说明该有机物分子中不存在C=C双键、C≡C三键,分子中除苯环外不含其它环状结构,苯环的不饱和度为4,所以含有1个苯环,侧链为烷基,烷基的组成为-C
5H
11.某苯的同系物分子式为C
11H
16,苯环上只有一个取代基,取代基为:-C
5H
11,
戊烷的同分异构体有:①正戊烷CH
3CH
2CH
2CH
2CH
3、②异戊烷CH
3CH
2CH(CH
3)CH
3 和③新戊烷 C(CH
3)
4,
其中①正戊烷分子中氢原子被苯环取代所得的同分异构体有三种,分别为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac4bd11373f082021fe3038948fbfbedab641b16?x-bce-process=image/quality,q_85)
、
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/f703738da9773912ed3d17d7fb198618367ae269?x-bce-process=image/quality,q_85)
、
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/83025aafa40f4bfbb3a10ce2004f78f0f7361816?x-bce-process=image/quality,q_85)
;
②异戊烷中氢原子被苯环取代的同分异构体有四种:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/4afbfbedab64034f33bc50b0acc379310a551d16?x-bce-process=image/quality,q_85)
③新戊烷中氢原子被苯环确定的同分异构体有1种,其结构简式为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/024f78f0f736afc3377dadd3b019ebc4b7451216?x-bce-process=image/quality,q_85)
,
所以C
11H
16的含有一个苯环且只有一个侧链同分异构体共有8种,
故选:D.