Which one of the following compounds does not | vedclass

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(B) An acidified $KMnO_4$ solution acts as a strong oxidizing agent. It is decolourised by substances that can be further oxidized.$SO_2$ is a reducin

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$FeCl_3$

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(B) An acidified $KMnO_4$ solution acts as a strong oxidizing agent. It is decolourised by substances that can be further oxidized.$SO_2$ is a reducing agent and is oxidized to $SO_4^{2-}$.$H_2O_2$ acts as a reducing agent in the presence of $KMnO_4$ and is oxidized to $O_2$.$FeSO_4$ contains $Fe^{2+}$,which is oxidized to $Fe^{3+}$.$FeCl_3$ contains $Fe^{3+}$,which is the highest oxidation state for iron in this context and cannot be further oxidized by $KMnO_4$. Therefore,it does not decolourise the solution.

Which one of the following compounds does not decolourise an acidified aqueous solution of $KMnO_4$?

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