作者FLYINGNIGHT (阿森)
看板Chemistry
標題[學科] 分析化學
時間Thu Feb 4 22:16:21 2010
1.Absorption of car bon dioxide by a standardized solution of sodium hydroxide
leads to a negative systemic error in analyses in which an indicator with
a basoc range is used;no systematic error is incurred when an indicator with
acidic range is used.why?
2.In selective precipitation of metal ions by sulfide or selective
complexation of metal ions by EDTA are generally achieved by PH control.
Explain how it is possible.
這題目感覺很熟悉...但是回去翻分析課本找不到..可能太久沒碰XD
請各位幫忙解答~
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