Question

Write the observation and the chemical reaction taking place when dilute HCl is added to Copper oxide. What can be said about the nature of copper oxide from the above reaction?​

Answer 1

When dilute hcl is added in small amount of copper oxide ,a greenish yellow gas is released .

A bluish coloured solution is formed .Copper oxide is basic and hcl is acidic ,so a neutralisation reaction occurs there .

CuO+2HCl ---> CuCl2 + H2O

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