Final answer:
The complete and balanced molecular equation for the reaction of copper(II) hydroxide with perchloric acid to form copper(II) perchlorate and water is Cu(OH)₂(s) + 2HClO₄(aq) → Cu(ClO₄)₂(aq) + 2H₂O(l).
Step-by-step explanation:
To complete and balance the given chemical equation, Cu(OH)₂(s) + HClO₄(aq), we need to identify the products. In this reaction, copper(II) hydroxide reacts with perchloric acid, resulting in the formation of copper(II) perchlorate and water. Since copper(II) perchlorate is soluble in water, it will exist as aqueous ions after the reaction. The balanced molecular equation is as follows:
Complete and Balanced Equation
Cu(OH)₂(s) + 2HClO₄(aq) → Cu(ClO₄)₂(aq) + 2H₂O(l)
Each substance's coefficient is determined by the principle of conservation of mass and the need to balance the number of atoms of each element on both sides of the equation. In this case, two moles of perchloric acid react with one mole of copper(II) hydroxide to yield one mole of copper(II) perchlorate and two moles of water.