问题 填空题

写出下列反应方程式

(1)苯乙烯的加聚反应:___________________;

(2)甲苯与浓硫酸、浓硝酸的混合酸在100℃时生成三取代产物:________________;

(3)2-氯丙烷与氢氧化钠水溶液共热:_____________________;

(4)向苯酚钠溶液中通入过量二氧化碳:__________________;

(5)丙醛发生银镜反应:____________________;

(6)对苯二甲酸和乙二醇作用形成高分子酯:___+_____→+______;

(7)2-甲基-1-丁醇发生消去反应_____________________

答案

(1)苯乙烯发生加聚反应生成聚苯乙烯,该反应为

,故答案为:

(2)发生取代反应生成2,4,6-三硝基甲苯,该反应为

故答案为:

(3)发生水解反应生成2-丙醇,该反应为CH3CHClCH3+H2O CH3CHOHCH3+HCl,故答案为:CH3CHClCH3+H2O CH3CHOHCH3+HCl;

(4)反应生成苯酚和碳酸氢钠,该反应为C6H5ONa+CO2+H2O→C6H5OH+NaHCO3,故答案为:C6H5ONa+CO2+H2O→C6H5OH+NaHCO3

(5)反应生成丙酸氨、Ag、氨气、水,该反应为CH3CH2CHO+2Ag(NH32OH→CH3CH2COONH4+H2O+2Ag+3NH3↑,故答案为:CH3CH2CHO+2Ag(NH32OH→CH3CH2COONH4+H2O+2Ag+3NH3↑;

(6)发生缩聚反应生成聚酯,该反应为

n+nOHCH2CH2OH→

+2nH2O,

故答案为:

(7)发生消去反应2-甲基-1-丁烯,该反应为OHCH2CH(CH3)CH2CH3 CH2=C(CH3)CH2CH3+H2O,故答案为:OHCH2CH(CH3)CH2CH3 CH2=C(CH3)CH2CH3+H2O.

完形填空
完形填空。
     When Mary Smith was a    1   , she wanted to be a teacher,    2     she liked children. When
she was twenty, she began teaching in a small school. She was a good teacher, and she     3     a lot
with the children in her class. They     4     her teaching.
      One day     5     of the girls in her class said to her, "Miss Smith,     6     does a man's hair
become grey before his beard (胡子) does?" Mary laughed and answered, "I don't know. Helen, do
you know?" "I     7   , either, Miss Smith," said Helen, "but it happened to my father." The     8    
children in the class laughed when they heard this. Then a boy said, "I     9  , Miss Smith. A man's hair
becomes grey     10     because it's sixteen years older than his beard."
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