用primary 既haloalkanes , 加埋AgNO3(aq)同 埋ethanol做solvent 佢會做SN2
呢個實驗阿sir話唔可以用太高溫, 例如80度,
而我地個實驗就係60度做...
咁點解唔係高溫做啊?
係唔係因為ethanol會走左?
定係因為高溫左個實驗太快 , 出ppt既時侯大家都好接近好難睇到?
hydrolysis of haloalkanes
2010-11-10 12:22 am
回答 (3)
2010-11-10 1:08 am
✔ 最佳答案
你個experiment係咪有用曬Cl, Br, I 既primary haloalkane?如果係既話應該係比較緊佢地三隻邊隻最容易捭OH- substitute左...
所以唔用高溫係想容易d比較邊隻快邊隻慢...
如果唔係既話我都只係得因為ethanol係volatile喱個解釋：D
希望幫到你XD
2010-11-11 22:20:09 補充：
Mr. Kwok 你好 :D
我都想問一下,
乜唔係tertiary haloalkane先會 high temp 變elimination, 而primary好難先會elimination?
我都只係個F7生, 想請教一下 :D
麻煩了! :D
參考: 我都讀緊chem XDDD
2010-11-11 3:01 am
high temp can result in elimination rather than substitution.
2010-11-10 6:47 am
同意. 注: boiling point of ethanol is 78*C.
收錄日期: 2021-04-19 23:32:26
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