Close Ad

How to use Percentage Yield Calculator:

According to the formula, it requires two values, first is the Theoretical Yield and the second is Actual Yield.

Example :

$$2\text{AL}\;+\;6\text{HCL}\;\rightarrow\;2\text{ALCL}_3\;+\;3\text{H}_2$$

95 g of hydrochloric acid are reacted with excess aluminum producing 2.2 g of hydrogen gas.What is percentage yield?

Solution :

Calculate theoretical yield :

$$95g\;\text{HCL}\left(\frac{1\text{mol}\;\text{HCL}}{34.46g\;\text{HCL}}\right)\left(\frac{3\text{mol}\;\text{H}_2}{6\text{mol}\;\text{HCL}}\right)\left(\frac{2.016g\;\text{H}_2}{1\text{mol}\;\text{H}_2}\right)=2.6g\;\text{H}_2$$

Next, Calculate % Yield :

$$\text{Percentage Yield}\;=\;\frac{\text{Actual}}{\text{Theoretical}}\;*\;100$$

$$\text{Percentage Yield}\;=\;\frac{2.2g\;\text{H}_2}{2.6g\;\text{H}_2}\;*\;100$$

$$\text{Percentage Yield}\;=\;8.6 % $$