Chemical formula!!
A solution of nitric acid dissolves solid copper, forming a solution of copper (II) nitrate and hydrogen gas.
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Nitric acid reacts with copper according to the reaction: 4 HNO3(l) + Cu(s) ==> Cu(NO3)2(s and aq) + 2 NO2(g) + 2 H2O(l) The copper nitrate salt that forms is a deep blue color. The nitrogen dioxide is a maroon vapor.
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2HNO3 + Cu= Cu (NO3)2 + H2
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