CBSE Class 12-science Answered
Which all reactions of pottasium permagnate and dicromate are important for board exams?
Asked by Aparna | 08 Mar, 2013, 09:44: PM
Expert Answer
Some important chemical reactions of KMnO4 are given below,
Action of heat: KMnO4 is stable at room temperature, but decomposes to give oxygen at higher temperatures.
heat
2KMnO4(s) ————→ K2MnO4(s) + MnO2 + O2(g)
2KmNO4 + 3H2SO4 → K2SO4 + 2MnSO4 + 3H2O + 5[O]Hydrogen peroxide to oxygen
2KMnO4 + 3H2SO4 → K2SO4 + 2MnSO4 + 3H2O + 5[O]
H2O2 + [O] → H2O + O2 × 5
2KMnO4 + 3H2SO4 + 5H2O2 → K2SO4 + 2MnSO4 + 8H2O + 5O2
Answered by | 09 Mar, 2013, 11:36: AM
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