what is action of conc.HNO3 on CU.
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Explanation:
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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Answer:
Cu+HNO3→ Cu(No3)2+NO+H2O
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