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
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
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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:<br /><br />\[ \text{Percent Yield} = \left( \frac{\text{Actual Yield}}{\text{Theoretical Yield}} \right) \times 100\% \]<br /><br />Where:<br />- **Actual Yield** is the amount of product obtained from the reaction.<br />- **Theoretical Yield** is the amount of product predicted based on stoichiometric calculations.<br /><br />For example, if you theoretically expect to produce 10 grams of a product but only obtain 8 grams, the percent yield would be:<br /><br />\[ \text{Percent Yield} = \left( \frac{8 \text{ grams}}{10 \text{ grams}} \right) \times 100\% = 80\% \]<br /><br />This means that 80% of the theoretical yield was actually obtained.
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