Why can't chlorine water decolouise acidified potassium permanganate solution?
There are chlorine atoms in chlorine water, and they can undergo oxidation so as to decolouise acidified potassium permanganate solution, isn't it?
chemistry....redox
2009-02-25 8:00 am
回答 (1)
2009-02-25 8:32 am
✔ 最佳答案
Chlorine is a strong oxidizing agent, it can be reduced readily. The half equation of chloride as oxidizing agent is:Cl2 + 2e^- → 2Cl^-
Acidified potassium permanganate is also a strong oxidizing agent, and it can also be reduced readily. The half equation of acidified potassium permanganate as oxidizing agent is:
MnO4^- + 8H^+ + 5e^- → Mn^2+ + 4H2O
There is no reaction when two strong oxidizing agents are mixed together.
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