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(13分)没食子酸丙酯简称PG,结构简式为 ,是白色粉末,难溶于水,微溶于棉子油

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题目:

(13分)没食子酸丙酯简称PG,结构简式为  ,是白色粉末,难溶于水,微溶于棉子油等油脂,是常用的食用油抗氧化剂。

⑴PG的分子式为           ,请写出PG分子中所含官能团的名称               ,1molPG与足量氢氧化钠溶液完全反应时,消耗的氢氧化钠的物质的量是           

PG可发生如下转化:

⑵A的结构简式为                       ,1mol没食子酸最多可与    mol H2加成。

⑶上图的有关变化中,属于氧化反应的有(填序号)             

⑷从分子结构或性质上看,PG具有抗氧化作用的主要原因是(填序号)            

A.含有苯环

B.含有羧基

C.含有酚羟基

D.微溶于食用油⑸反应④的化学方程式为:                                                      

⑹B有多种同分异构体,写出其中符合下列要求的同分异构体的结构简式:              

i.含有苯环,且苯环上的一溴代物只有一种;ii.既能发生银镜反应,又能发生水解反应。

答案:

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参考答案:A解析:在信息系统开发之前,首先要通过详细的规划,确定各个信息系统之间的关系,否则就会出现不兼容的系统,数据难以统一。所以企业在开发信息系统之前有必要首先做好总体规划。最高层管理者参与系统...

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