A student took a small amount of copper oxide in a conical flask and…………….

Question :A student took a small amount of copper oxide in a conical flask and
added dilute hydrochloric acid to it with constant stirring. He observed a change in color of the solution.
(i) Write the name of the compound formed and its colour,
(ii) Write a balanced chemical equation for the reaction involved.

The correct answer is -(i) When copper oxide is added to dilute hydrochloric acid, copper chloride (greenish-blue color) and water are formed. The color of the solution changes to greenish-blue.

(ii) The balanced chemical equation for the reaction involved is:

CuO(s) + 2HCl(aq) → CuCl2(aq) + H2O(l)

Here, copper oxide (CuO) reacts with hydrochloric acid (HCl) to form copper chloride (CuCl2) and water (H2O).