Question

Write a balanced chemical reaction for the dissolution of your copper oxide sample in hydrochloric acid

Answer 1

Copper oxide reacts with hydrochloric acid to produce copper chloride and water.

So the basic equation that illustrates this reaction is:
CuO + HCl ......> CuCl2 + H2O

Now, we need to balance this equation:
the number of copper and oxygen moles are balanced.
For each of hydrogen and chlorine, we have one mole as a reactant and two moles as product.
Therefore, to balance this, we will add an extra mole of HCl in the reactants.

Based on this, the final balanced equation would be:
CuO + 2HCl ................> CuCl2 + H2O