Which of the following can act as a reducing | vedclass

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(D) reducing agent is a substance that donates electrons and gets oxidized in a chemical reaction.In $(COOH)_2$ (oxalic acid),the carbon atom is in th

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$(COOH)_2$

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(D) reducing agent is a substance that donates electrons and gets oxidized in a chemical reaction.In $(COOH)_2$ (oxalic acid),the carbon atom is in the $+3$ oxidation state.It can be oxidized to $CO_2$,where carbon is in the $+4$ oxidation state.Since it can increase its oxidation state,$(COOH)_2$ acts as a reducing agent.Conversely,$HNO_3$,$KMnO_4$,and $H_2SO_4$ are strong oxidizing agents because the central atoms ($N$,$Mn$,$S$) are in their highest possible oxidation states and tend to get reduced.

Which of the following can act as a reducing agent?

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