Copper oxide reacts with hydrogen to produce copper.\nThe equation for the reaction is: CuO + H₂ → Cu + H₂O\nCalculate the percentage atom economy for obtaining copper from this reaction.\nUse the equation: Percentage atom economy = (Mᵣ of desired product / Total Mᵣ of reactants) × 100\nRelative atomic mass (Aᵣ): Cu = 63.5\nRelative formula masses (Mᵣ): H₂ = 2, CuO = 79.5

Atom economy is a measure of how efficiently a reaction converts reactants into the desired product.\nThe formula is: \nPercentage atom economy = (Mᵣ of desired product / Total Mᵣ of reactants) × 100\n\n1. **Mᵣ of desired product:** The desired product is copper (Cu). Its relative atomic mass (Aᵣ) is given as 63.5.\n2. **Total Mᵣ of reactants:** The reactants are CuO and H₂. Their Mᵣ values are given as 79.5 and 2.\n Total Mᵣ = Mᵣ(CuO) + Mᵣ(H₂) = 79.5 + 2 = 81.5\n3. **Calculate atom economy:**\n Percentage atom economy = (63.5 / 81.5) × 100\n Percentage atom economy = 0.77914... × 100\n Percentage atom economy ≈ 77.9%