What is percent yield in a chemical reaction?

Understanding Percent Yield

Percent yield of a reaction is the ratio of its actual yield to the theoretical yield multiplied by 100. It is a measure of the efficiency of a chemical reaction in producing the expected amount of product.

Calculation of Percent Yield

From the balanced chemical equation of the reaction:

CS₂ + 3Cl₂ → CCl₄ + S₂Cl₂

Molar mass of CS₂ = 76 g/mol

Molar mass of CCl₄ = 154 g/mol

Mass of CCl₄ produced from 46.9 g of CS₂:

46.9 × 154/76 = 95.03 g

Therefore, the theoretical yield is 95.03 g.

Actual yield = 56.5 g

Percent yield = 56.5/95.03 × 100 = 59.4 %

Conclusion

Thus, the percent yield of the reaction involving carbon disulfide and chlorine is 59.4%, indicating that 59.4% of the expected product was obtained in the actual reaction.