Question

How much copper is obtained from 100g of copper sulphate

Answer 1

CuSO4 + 2 e- → Cu (s) + SO42-

Hence 1 mole of CuSO4 provides 1 mole Of Cu.

Hence 159.5 g of CuSO4 → 63.5 g of Cu { molar mass of CuSO4 is 159.5 and cu is 63.5}

⇒1 g of CuSO4 → 63.5 / 159.5 g of Cu

∴ 100 g of CuSO4→ 0.398 × 100 g of Cu

Hence 100 g of CuSO4 will give 39.81 g of copper.