Decolourisation of acidified potassium perman | vedclass

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(B) $KMnO_4$ acts as a strong oxidizing agent in acidic medium and $H_2O_2$ acts as a reducing agent.The reaction is: $2MnO_4^- + 6H^+ + 5H_2O_2 \righ

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Reduction of $KMnO_4$

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(B) $KMnO_4$ acts as a strong oxidizing agent in acidic medium and $H_2O_2$ acts as a reducing agent.The reaction is: $2MnO_4^- + 6H^+ + 5H_2O_2 \rightarrow 2Mn^{2+} + 5O_2 + 8H_2O$.In this reaction,the manganate$(VII)$ ions $(MnO_4^-)$ are reduced to manganese$(II)$ ions $(Mn^{2+})$,which causes the decolourisation of the purple solution.

Decolourisation of acidified potassium permanganate occurs when $H_2O_2$ is added to it,this is due to

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$I. \, H_2O_2 + O_3 \rightarrow H_2O + 2O_2$
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