Consider the balanced equation. CuSO sub 4 plus Zn rightarrow ZnSO sub 4 plus Cu If 200 point 0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper?

The balanced equation has a 1:1 mole ratio between CuSO₄ and Cu. The molar mass of CuSO₄ is about 159.61 g/mol, so 200.0 g is 200.0 ÷ 159.61 ≈ 1.253 mol CuSO₄. This produces 1.253 mol Cu, or 1.253 × 63.55 ≈ 79.63 g copper, so the theoretical yield is 79.63 g, choice C.

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