如果將acidified 的KMnO4加入NaSO3,應該會有Redox,
如果acidic medium 變成alkaline medium,條eqtn應該點轉?
Chem:Alkaline medium
2008-05-31 7:40 pm
回答 (1)
2008-05-31 8:39 pm
✔ 最佳答案
The half equation for KMnO4 acting as an oxidizing agent in an alkaline solution:MnO4-(aq) + 2H2O(l) + 3e- → MnO2(s) + 4OH-(aq) ... (*)
The half equation for Na2SO3 acting as a reducing agent in an alkaline solution:
SO32-(aq) + 2OH-(aq) → SO42-(aq) + H2O(l) + 2e- ... (**)
To write the overall equation, 2x(*) + 3x(**):
2MnO4-(aq) + 3SO32-(aq) + H2O(l) → 2MnO2(s) + 3SO42-(aq) + 2OH-(aq)
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