【单选题】【消耗次数:1】
脂肪伯胺或芳香伯胺与三氯甲烷,( )的醇溶液共热,发生异腈反应。
NaOH
KOH
KCl
NaCl
参考答案:
复制
纠错
相关题目
【单选题】 芳伯胺与( )在低温和强酸溶液中发生重氮化反应。
①  亚硝酸
②  盐酸
③  稀硝酸
④  浓硝酸
【单选题】 芳香族伯胺在( )的条件下和亚硝酸的强酸性水溶液反应,发生重氮化。
①  加热
②  低温
③  煅烧
④  高温
【单选题】 脂肪胺和芳香胺相比较:其碱性( )。
①  脂肪胺大
②  芳香胺大
③  相同
④  无法比较
【判断题】 不同胺的碱性强弱的一般规律为:脂肪胺大于氨大于芳胺,脂肪胺中仲大于伯大于叔,芳胺中一芳基胺大于二芳基胺大于三芳基胺
①  正确
②  错误
【单选题】 氯乙烷与NaOH水溶液共热时,氯乙烷中断裂的化学键是:( )。
①  C-H 
②  C-Cl及C-H
③  C-C
④  C-Cl
【单选题】 腈在乙醇与( )的作用下还原为伯胺。
①  金属镁
②  金属铝
③  金属铁
④  金属钠
【单选题】 脂肪胺中与亚硝酸反应能够放出氮气的是
①  季胺盐
②  叔胺
③  仲胺
④  伯胺
【单选题】 能将伯、仲、叔胺分离开的试剂为
①  斐林试剂
②  硝酸银的乙醇溶液
③  苯磺酰氯的氢氧化钠溶液
④  碘的氢氧化钠溶液
【判断题】 芳伯胺与醛作用失水后,生成希夫碱
①  正确
②  错误
【判断题】 芳香族伯胺能在低温(一般为0到5摄氏度)下与亚硝酸钠的强酸(通常使用盐酸或硫酸)溶液作用,生成重氮盐
①  正确
②  错误
随机题目
【判断题】 Maths are very difficult to learn.
①  正确
②  错误
【单选题】 —Hi, Tory, can I use your computer for a while this afternoon?—Sorry. __________.
①  Its repaired
②  It has been repaired
③  Its being repaired
④  It had been repaired
【单选题】 In that country, guests usually feel that they are not highly ______ if the invitation to a dinner party is given only three or four days before the party date.
①  regarded
②  thought
③  admired
④  concerned
【单选题】 Gear didn’t buy a new bike. Neither [填空] Jim.
①  do
②  does
③  did
④  is
【单选题】 We don’t have [填空] milk in the fridge.
①  any
②  little
③  some
④  many
【单选题】 Would you please keep silent? The weather report __________ and I want to listen.
①  is broadcast
②  is being broadcast
③  has been broadcast
④  had been broadcast
【单选题】 The [填空] are playing the guitar now.
①  child
②  childs
③  children
④  childrens
【单选题】 Maths [填空] not easy to learn.
①  are
②  is
③  am
④  were
【判断题】 Please take some photoes for me.
①  正确
②  错误
【判断题】 What do your see in the show?
①  正确
②  错误