Percent Yield A percent that indicates how much reactant was left over after the reaction. a ratio, represented as a percent, of how much product you got compared to how much you expected to get

Percent yield is a measure of the efficiency of a chemical reaction, indicating the percentage of the theoretical yield that is actually obtained. It is calculated using the formula: Where:- **Actual Yield** is the amount of product obtained from the reaction.- **Theoretical Yield** is the amount of product predicted based on stoichiometric calculations.For example, if you theoretically expect to produce 10 grams of a product but only obtain 8 grams, the percent yield would be: This means that 80% of the theoretical yield was actually obtained.