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Introduction to Nitric Acid

nbsp;Why NO2 ...

Question

Why NO2 us called mixed or double acid anhydride?

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Solution

Acid anhydrides: Oxides which produce acidic solutions on reaction with water are called acid anhydrides.
NO₂ forms two acids when it reacts with water and hence it is called double or mixed acid anhydride.
2NO₂ (g) + H₂O (l) â†’ HNO₂ (aq) + HNO₃ (aq)

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