AL Organic: how to make alkanediol

Newcastle Fans

點樣由alkene變做alkanediol? (e.g. CH2 = CH2 -------> CH2(OH)CH2(OH) )
我o個班就話用KMnO4/OH-, 再heat佢
但隔離班就話都係用KMnO4/OH-, 不過就用cold
邊個先岩

Sol_Campbell

cold就得喇

如果warm or too concentrated or acidic KMnO4既話會變kentones同carboxylic acid

納比

我想唔f都難,完全唔識,另一方面非常佩服sol_campbell

Sol_Campbell

Originally posted by 納比 at 2005-2-21 04:49 PM:
我想唔f都難,完全唔識,另一方面非常佩服sol_campbell

我都係睇番notes姐

納比

Originally posted by Sol_Campbell at 2005-2-21 04:52 PM:


我都係睇番notes姐

我乜ｎｏｔｅｓ都冇，得本垃圾ｍａｎｈａｔｔｅｎ，溫完都＝冇溫一樣

我既目標就係＜２００５年的最後一隻Ｅ＞

Newcastle Fans

Originally posted by Sol_Campbell at 2005-2-21 16:46:
如果warm or too concentrated or acidic KMnO4既話會變kentones同carboxylic acid

完全唔知

臘味加油

納比

Originally posted by Newcastle Fans at 2005-2-21 05:13 PM:



臘味加油

大家咁話

只要ｂｉｏ　ｃ到，ｃｈｅｍ合到格就升ｕ有望

迪肯尼奧

Originally posted by 納比 at 2005-2-21 05:15 PM:

大家咁話

只要ｂｉｏ　ｃ到，ｃｈｅｍ合到格就升ｕ有望

bio 粉難 C 的

讀哂, 答哂都未知有冇把握 C到, bio 真係好講運數, 唔同 chem or phy

[ Last edited by 迪肯尼奧 on 21-2-2005 at 06:12 PM ]

Newcastle Fans

Originally posted by 迪肯尼奧 at 2005-2-21 18:10:
bio 粉難 C 的
讀哂, 答哂都未知有冇把握 C到, bio 真係好講運數, 唔同 chem or phy

好多時bio既野都唔知佢要答乜  

迪肯尼奧

Originally posted by Newcastle Fans at 2005-2-21 06:14 PM:

好多時bio既野都唔知佢要答乜  

recommend 補下 肥蔣 intensive, 當複習一次都好

Newcastle Fans

Originally posted by 迪肯尼奧 at 2005-2-21 18:17:


recommend 補下 肥蔣 intensive, 當複習一次都好

太遲喇
其實要識既我都識哂
而家問題唔係我識唔識
而係我唔知答得岩唔岩

迪肯尼奧

Originally posted by Newcastle Fans at 2005-2-21 06:19 PM:

太遲喇
其實要識既我都識哂
而家問題唔係我識唔識
而係我唔知答得岩唔岩

咁得啦, 做果時冷靜d, 但寫快d 就得架喇

Newcastle Fans

Originally posted by 迪肯尼奧 at 2005-2-21 18:22:


咁得啦, 做果時冷靜d, 但寫快d 就得架喇

明, 唔好急, 最緊要快嘛

納比

Originally posted by 迪肯尼奧 at 2005-2-21 06:10 PM:


bio 粉難 C 的

讀哂, 答哂都未知有冇把握 C到, bio 真係好講運數, 唔同 chem or phy

[ Last edited by 迪肯尼奧 on 21-2-2005 at 06:12 PM ]

咁我咪仆直,我阿sir講到你背晒全部野都起碼c咁

迪肯尼奧

Originally posted by 納比 at 2005-2-21 08:04 PM:

咁我咪仆直,我阿sir講到你背晒全部野都起碼c咁

宜家考中史咩

講真個句, 唔好上咁多網先係王道, 或者仆爆部腦佢都好有幫助 真架

迪肯尼奧

Originally posted by Newcastle Fans at 2005-2-21 07:14 PM:

明, 唔好急, 最緊要快嘛

儒子可教

宜家d bio 相對地要你背o既野越黎越少啦(比起以前), 考多左理解野

換句話說, 不如操多d data 題, 果度拎高分好大幫助架 (你諗下, paper 2 背野係人都背架啦, 分別唔大, 你識背, 人地都識背 )

Newcastle Fans

Originally posted by 迪肯尼奧 at 2005-2-21 22:32:
換句話說, 不如操多d data 題, 果度拎高分好大幫助架 (你諗下, paper 2 背野係人都背架啦, 分別唔大, 你識背, 人 ...

有咁多題目俾我先得架

迪肯尼奧

Originally posted by Newcastle Fans at 2005-2-21 10:34 PM:

有咁多題目俾我先得架

data 題真係不妨做多幾年, 以前果d好正架

記得 simon 成日話以前 d 題目好正架, 唔好side

Newcastle Fans

Originally posted by 迪肯尼奧 at 2005-2-21 22:39:


data 題真係不妨做多幾年, 以前果d好正架

記得 simon 成日話以前 d 題目好正架, 唔好side

我最早得98
點搵番以前o個D

迪肯尼奧

Originally posted by Newcastle Fans at 2005-2-21 11:10 PM:

我最早得98
點搵番以前o個D

學校阿 sir 冇架咩??? 教左咁多年都唔 keep???

再唔係問下同學 law, 一班實有d變態同學做成十年 pastpaper 有多架