on adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue green .predict the new compound formed which imparts a blue green color to the solution?
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•Copper does not react with HCl acid, but copper oxide does react. A metal-acid reaction is a redox reaction. Since copper has a higher reduction potential than hydrogen, it does not react with non-oxidising acids like HCl or dil.H2SO4.
But metal oxides are basic substances, and so they generally react with acids forming respective salt and water. Such acid-base type reactions (neutralisation) are non-redox in nature.
Copper oxide is a weak base, and it easily reacts with HCl forming soluble copper(II) chloride and water.
CuO(s) + 2HCl(aq) = CuCl2(aq) + H2O(l)
•Copper does not react with HCl acid, but copper oxide does react. A metal-acid reaction is a redox reaction. Since copper has a higher reduction potential than hydrogen, it does not react with non-oxidising acids like HCl or dil.H2SO4.
But metal oxides are basic substances, and so they generally react with acids forming respective salt and water. Such acid-base type reactions (neutralisation) are non-redox in nature.
Copper oxide is a weak base, and it easily reacts with HCl forming soluble copper(II) chloride and water.
CuO(s) + 2HCl(aq) = CuCl2(aq) + H2O(l)
Answered by
12
the new compound formed is copper(ll)chloride or CuCl2.
The above pic is of CuCl2.
Eq^n=>CuO+2HCl=CuCl2+H2O
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