To calculate the percentage yield, follow these steps:
Determine the molar masses:
- CaCO3: 40 (Ca) + 12 (C) + 3 * 16 (O) = 100 g/mol
- CaO: 40 (Ca) + 16 (O) = 56 g/mol
Calculate the theoretical yield of CaO:
- Moles of CaCO3 used: 500 g / 100 g/mol = 5 moles
- The reaction shows a 1:1 mole ratio between CaCO3 and CaO
- Theoretical yield of CaO: 5 moles * 56 g/mol = 280 g
Calculate the percentage yield:
- Percentage yield = (actual yield / theoretical yield) * 100
- Percentage yield = (250 g / 280 g) * 100 ≈ 89.29%
Therefore, the percentage yield of calcium oxide is approximately 89.29%.
