excess potassium iodide solution is added to acidified potassium permanganate solution
What is the observation and ionic equation??
(主要是問equation要不要加Sulphuric acid? 因為條問題話acidified.....)
求KI +KMnO4(acidify)的ionic equation
2008-06-30 1:51 am
回答 (1)
2008-06-30 2:20 am
✔ 最佳答案
5e- (MnO4)- 8H -----> Mn2 4 H2O 2I- ----> I2 2e-
overall ionic equation:
2(MnO4)- 16H 10I- ----> 2Mn2 8H2O 5 I2
Observation:
Colour of solution change from purple to brown.
in equation , acid is added for the reduction of (MnO4)- , but not necessarily sulphuric acid, though it is a common one to be added.
收錄日期: 2021-04-15 16:53:45
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