這三種藥品是幹麻的 - 酒精
By Audriana
at 2005-10-28T00:00
at 2005-10-28T00:00
Table of Contents
實驗室中有下列三樣物品 試說明其可能的用途
1. 90%酒精
2. 檸檬酸鈉
3. 90%丙酮及石油醚
1. 90%酒精
2. 檸檬酸鈉
3. 90%丙酮及石油醚
Tags:
酒精
All Comments
By James
at 2005-10-30T12:09
at 2005-10-30T12:09
2. 檸檬酸鈉:增酸劑檸檬酸的緩衝液
3. 90%丙酮及石油醚 :溶劑
By Selena
at 2005-10-30T01:54
at 2005-10-30T01:54
緩衝能力: pH值改變1單位內...每1公升溶液所能容忍加入的酸(或鹼)莫爾數!!!
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