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Introduction to Inorganic Chemistry

On adding dil...

Question

On adding dilute hydrochoric acid to copper oxide powder the solution formed is blue green predict the new compound formed which imparts a blue green colour to the solution?

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Solution

The new compound formed is cuprous chloride CuCl₂. It imparts a blue-green colour to the solution.
Reaction : CuO (s) + 2HCl (aq) -----> CuCl₂ (aq) + H₂O

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