13 __ A student calculates a percent yield of 103 What is the most likely explanation? a. The reaction was extremely efficient b. The product contained impurities or was wet c. The theoretical yield was calculated incorrectly d. The temperature was too high

## Step 1<br />The percent yield is a measure of the efficiency of a chemical reaction. It is calculated by dividing the actual yield (the amount of product actually produced) by the theoretical yield (the amount of product that would be produced if the reaction were 100% efficient), and then multiplying by 100.<br /><br />### **Percent Yield = \(\frac{Actual Yield}{Theoretical Yield} \times 100\)**<br /><br />## Step 2<br />A percent yield of 103% is not possible in a real-world scenario. This is because the actual yield cannot exceed the theoretical yield. <br /><br />## Step 3<br />The most likely explanation for a percent yield of 103% is that the product contained impurities or was wet. This would make the actual yield appear larger than the theoretical yield, leading to a percent yield greater than 100%.