black copper oxide is placed in a beaker containing hydrochloric acid. after 1 hour the colour of the reaction mixture changes to............
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It changes to Blue-green solution.
Explanation:
During the reaction copper oxide reacts with dilute hydrochloric acid to form cupric chloride. The formation of cupric chloride results in the change in the colour from black to blusih green. CuO(black) + dil.2HCl → CuCl2 (bluish green)+ H2O.
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Answer:
During the reaction copper oxide reacts with dilute hydrochloric acid to form cupric chloride.
The formation of cupric chloride results in the change in the colour from black to blusih green.
CuO(black) + dil.2HCl → CuCl2 (bluish green)+ H2O
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