Calcium carbide, CaC2, is an important preliminary chemical for industries producing synthetic fabrics and plastics. CaC2 may be produced by heating calcium oxide with coke: CaO + 3C → CaC2 + CO.
In a reaction, 1.5kg of carbon was reacted with calcium oxide and calcium carbide was produced. calculate the percent yield of calcium carbide.
Moles of Carbon = 1500g/12g = 125 mol
When 3 mole of C react with 1 mole of CaO
Moles of CaO = 125mol/3 = 41.66 mol
Mass of CaO = 41.66 × 56.077 = 2336.16 = Actual yield
Similarly moles of CaC2 = 41.66 mol
Mass of CaC2 = 41.66 × 64.099 = 2670.36 g = theoretical yield
Percentage yield =
Percentage yield = = 87.4%