What happens when aluminium combines with air?
Explain the reaction of copper oxide with hydrochloric acid?
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When aluminium came in the contact with air, then they combine to form aluminium oxide. The balanced chemical equation is, In this reaction, four moles of aluminium and two moles of oxygen gas react to produce 2 moles of aluminium oxide.
Reactions. Copper(II) oxide dissolves in mineral acids such as hydrochloric acid, sulfuric acid or nitric acid to give the corresponding copper(II) salts: CuO + 2 HNO3 → Cu(NO3)2 + H2O. CuO + 2 HCl → CuCl2 + H2O.
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