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The blue-green colour that appears when copper oxide reacts with HCl is due to the formation of

Question
The blue-green colour that appears when copper oxide reacts with HCl is due to the formation of
CuCl2
CuO
CuOH
Cu2O
Answer
CuCl2
Detailed Explanation
Copper(II) chloride, formed in the reaction, gives the solution its characteristic blue-green colour.
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