问题 推断题

(16分)某烃A是乙烯的同系物,A与乙烯一样,都是重要的化工原料。已知A与氢气的相对 密度为21,由A经下列反应可得到G、H两种高分子化合物,它们都是常用的塑料。

请回答下列问题:

(1)E不能使溴的四氯化碳溶液褪色,E的结构简式为____             

(2)由A生成B和H的反应方程式分别为                         

(3)一定条件下,2 molF之间脱去1 mol水生成一种具有芳香气味的物质I,写出反应的化学方程式                                  

(4)I能发生的反应有:              

A.取代反应

B.消去反应

C.水解反应

D.中和反应E.氧化反应

(5)F的一种同分异构体中有五种不同化学环境的氢且能发生银镜反应,写出其结构简式      。

答案

(1)

(2) 

 

(3)

(4)ABCDE(答对3个得一分,4个2分,5个3分)

(5)

题目分析:A是乙烯的同系物,则A的通式是 CnH2n是重要的化工原料。已知A与氢气的相对密度为21,所以A的相对原子质量是21×2=42,则A:CnH2n n=3  A是丙烯,

由A经下列反应可得到G、H两种高分子化合物的工艺流程可以知道

A→B  

B→C   +2NaOH→CH3CH2(OH)-CH2(OH) +2NaBr

C→D   CH3CH2(OH)-CH2(OH) →CH3CH2(OH)CHO

D→E   CH3CH2(OH)CHO→

E→F  

A→H

(1)E不能使溴的四氯化碳溶液褪色,E的结构简式为

(2)由A生成B和H的反应方程式分别为

(3)一定条件下,2 molF之间脱去1 mol水生成一种具有芳香气味的物质I,该反应是酯化反应,反应的化学方程式是

(4)I是含有,羟基好羧基的酯,所以能发生的反应有:A B C D E F都可以

A.取代反应

B.消去反应

C.水解反应

D.中和反应

E.氧化反应

(5)F的一种同分异构体中有五种不同化学环境的氢且能发生银镜反应,其结构简式是

点评:选修5中有机物中的转化关系,尤其是官能团的转化,条件一定要记得准确,这是破题的突破口。有机合成的典型题目,从合成条件和给出的信息分析可以得到各个点的结构,从而能够将各个题目破解。

完形填空
完形填空。
     The Town of Pressure and the Town of Pleasure were neighbors but had nothing in common.
Residents built walls to   1  influence from the other town.
     In Pressure,   2   struggled to be the very best. When women   3   birth, they would compete to
have the baby with the loudest cry. There was violent competition in every aspect of life. Because 
  4   was the index (指数) of success, people were  5   busy making money, with no time for relaxation.
Some young people couldn't bear the intensity and resorted to drink or drugs to escape.
       6  , over in Pleasure, the motto was "As long as you like it, do it." People grew up without   7   and
could do anything   8   liked. Children played computer games day and night. At school, teachers didn't
care   9   students showed up or not.Workers might sit around the office   10   sipping coffee and doing
nothing.   11   the lack of regulations, nobody worried about losing their jobs. It was   12   that mattered.
No one had the slightest thought of moving   13   , either for themselves or for the town. The computers
they used 14   old models from Pressure.
     Some of the young were addicted to   15   because of the emptiness of their lives. Then, people in
the two towns began asking themselves, "What is life   16   ?" But, just before life in the two towns
completely failed, there came a saint - Mr. Reason. He went from door to door,   17   with people
and giving advice. People in Pressure learnt to be   18   with what they had, while people in Pleasure
began to make plans. They   19   the walls between them and built a road to connect the two. The
towns' people   20   to realize the truth - there is no space between Pressure and Pleasure if they
don't go to extremes.
( ) 1. A. look out  
( ) 2. A. everyone   
( ) 3. A. gave    
( ) 4. A. health  
( ) 5. A. seldom  
( ) 6. A. Meanwhile   
( ) 7. A. pleasure  
( ) 8. A. we    
( ) 9. A. what    
( )10. A. in the morning
( )11. A. Thanks to
( )12. A. money    
( )13. A. backward  
( )14. A. was      
( )15. A. books    
( )16. A. at    
( )17  A. persuading
( )18. A. content   
( )19. A. cut down  
( )20. A. went    

B. work out
B. anyone  
B. took  
B. joy  
B. always
B. At that time
B. pressure
B. you  
B. who   
B. all way long
B. Regardless of
B. time  
B. forward
B. seemed  
B. work  
B. for  
B. talking
B. surprised
B. put down
B. returned  

C. keep out
C. nobody  
C. offered  
C. children
C. hardly
C. Therefore
C. work  
C. they  
C. where
C. all day long
C. Owe to  
C. pleasure
C. downward
C. appeared
C. money
C.in  
C. advising
C. patient
C. pulled down
C. happened  

D. give out        
D. somebody        
D. brought        
D. wealth          
D. sometimes      
D. once in a while
D. happiness      
D. it              
D. whether        
D. on the way      
D. According to    
D. pressure        
D. toward          
D. were            
D. drugs          
D. to              
D. telling        
D. angry          
D. set up          
D. came            

问答题 简答题