In the production of copper from ore containing copper(II) sulfide, the ore is first roasted to change it to the oxide according to the following equation:

2CuS + 3O2 → 2CuO + 2SO2

Molar Masses:

  • CuS (95.611 g/mol)
  • O2 (31.9988 g/mol)
  • CuO (79.545 g/mol)
  • SO2 (64.0638 g/mol)

If 730 g of CuS and 379 g of O2 are available, which reactant is limiting? What mass of CuO will be produced?

  • Limiting reactant: Answer
  • CuS
  • O2
  • Mass CuO: 
  • Answer for part 1 and coordinate 2
  •  g CuO

What mass of CuO can be formed from the reaction of 12.9 g of CuS and 83.4 g of O2?

  • Limiting reactant: Answer
  • CuS
  • O2
  • Mass CuO: 
  • Answer for part 2 and coordinate 2
  •  g CuO