回應(AL)

回應

02sing:
我想問下今年 syl 入面有咩係新加架?green chem 好似係..唔知點溫呀.. 點算好呀......

化學友:
02sing，你可以睇返化學友嘅第一篇文章(3月)，o個度寫左邊d係新加嘅topics，如果唔清楚，再留言比化學友丫。

02sing，好多同學仔都覺得green chem 好似讀左等於冇讀咁。其實唔使太驚o架，化學友好有信心green chem會好似下面嘅pastpaper咁，同其他topics一齊考:

1. 2003 Paper II 1c

2. 2006 Paper II 6b

仲有呀，記住下面o個12個green chem嘅 basic principles:

1. waste prevention

2. real-time analysis for pollution prevention

3. minimize the potential for accidents

4. design less hazardous chemical synthesis

5. design safer chemicals

6. design for energy efficiency

7. design for degradation

8. maximize atom economy

9. use safer solvents and auxiliaries

10. use renewable feedstocks

11. reduce derivatives

12. use catalysts

其中，8-12點最重要，一定一定要記得!!!因為考試會問你點解reaction A is better than reaction B in terms of green chemistry，通常你會用8-12點o黎做comparison。如果你冇乜時間，化學友suggest你可以睇下C C Lee 嘅green chem關於8-12嘅detail部份，唔係好多o架。不過，theory部份其實唔使睇太多，最重要係睇書裡面o個d examples，你會知道考試會點考o架喇，對你好有幫助。

最後，記住做熟atom economy嘅數，今年AL chem都幾大機會會出同埋勁易計錯o架。

02sing，加油同埋盡力呀!!!