Chapter 9, Problem 58A

Interpretation Introduction

Interpretation: The actual yield is to be calculated

Concept introduction: After the completion of reaction the amount of product formed is known as yield. The theoretical yield is the calculated amount of yield that is obtained when the reaction gets completed. The percent yield is the ratio of obtained yield by theoretical yield.

Answer to Problem 58A

The actual yield is $\text{5}\text{g}$ .

Explanation of Solution

Given information: The percent yield is $\text{40}\text{.0}\text{\%}$ . The theoretical yield is $\text{12}\text{.5}\text{g}$ .

The formula to calculate percent yield is,

  $\%\text{yield}=\frac{\text{Actual yield}}{\text{Theoretical}\text{yield}}\times 100$

Substitute the value of theoretical yield and percent yield in the above formula.

  $\begin{array}{c}\%\text{yield}=\frac{\text{Actual yield}}{\text{Theoretical}\text{yield}}\times 100\\ 40.0=\frac{\text{Actual yield}}{12.5\text{g}}\times 100\\ \text{Actual yield}=\frac{40.0\times 12.5\text{g}}{100}\\ =5\text{g}\end{array}$

Conclusion

The actual yield is $\text{5}\text{g}$ .