Final answer:
The balanced chemical equation for the reaction between CuO and HCl is CuO + 2 HCl → CuCl2 + H2O.
Step-by-step explanation:
To balance the chemical equation CuO + HCl → CuCl + H2O, we need to ensure that the number of atoms for each element is the same on both sides of the equation. In this case, we need to correct the formulas of the products, use the subscript 2 for CuCl to make it CuCl2 and balance the chlorine atoms. Here's the balanced equation:
CuO + 2 HCl → CuCl2 + H2O
If you encounter other reactions that need balancing, such as in the equations provided, remember to count the atoms of each element on both sides of the equation, then adjust coefficients as needed to make the equation balanced.