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Question

Nitric acid acts as only as an oxidizing agent while nitrous acid acts both as an oxidizing as well as reducing agent. Explain.

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Solution

Nitric acid (HNO 3 ) is a colourless, fuming, and highly corrosive liquid (freezing point -42° C [-44° F], boiling point 83° C [181° F]) that is a common laboratory reagent and an important industrial chemical for the manufacture of fertilizers and explosives. It is toxic and can cause severe burns.It is a strong oxidizing agent

Nitrous acid (HNO 2 ) is an unstable, weakly acidic compound that exists only in the form of cold, dilute solutions. It is useful in chemistry in converting amines into diazonium compounds, which are used in making azo dyes. Nitrous acid decomposes into nitric oxide, NO, and nitric acid, HNO3 . It can act either as an oxidizing agent or as a reducing agent.


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