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What happens HNO₂ is mixed with dissolved copper____

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Final answer:

HNO2 reacts with dissolved copper to form nitrogen dioxide (NO2).

Step-by-step explanation:

When HNO₂ is mixed with dissolved copper, it reacts to form nitrogen dioxide (NO₂). The reaction can be represented by the following equation:



HNO₂ + Cu → Cu(NO₂)₂ + NO₂



In this reaction, the copper is oxidized while the nitric acid (HNO₂) is reduced.

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