1.

Copper reacts with concntrated nitric acid.

Answer» `underset("Copper")(Cu_((s)))+underset("acid")underset("Nitric")underset("conc.")(4HNO_(3(aq)))to underset("nitrate")underset("Copper")(Cu(NO_(3))_(2(aq)))+underset("dioxide")underset("Nitrogen")(2NO_(2(g)))+underset("Water")(2H_(2)O_((l)))`


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