Question

Write the balanced chemical equation for the reaction between Copper oxide and dilute Hydrochloric acid .

Answer 1

When dilute $\left(\mathrm{HCl}\right)$Hydrochloric acid is added to Copper oxide $\left(\mathrm{CuO}\right)$, it produces a bluish - green solution of Copper (II) chloride.

Reaction between Copper oxide and Hydrochloric acid is represented as

$$\begin{gathered} \mathrm{CuO}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}.\right)\to {\mathrm{CuCl}}_2(\mathrm{aq}.)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \mathrm{Copper}\mathrm{Hydrochloric}\mathrm{Copper}\left(\mathrm{II}\right)\mathrm{Water} \\ \mathrm{oxide}\mathrm{acid}\mathrm{chloride} \end{gathered}$$

This reaction is an example of double displacement reaction.