Question

A student measures a pressure increase of 0.25 atm while collecting the H2 gas products from the reaction of Mg with HCl. The theoretical pressure change is 0.29 atm. What is the % yield

Answer 1

Answer: Thus the % yield is 86.2%

Explanation:

Percentage yield is the ratio of actual change to the theoretical change in terms of percentage.

The given reaction is :

$Mg+2HCl\rightarrow MgCl_2+H_2$

To calculate the percent yield :

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

Given : Actual pressure increase = 0.25 atm

Theoretical pressure change = 0.29 atm.

$\%\text{ yield of reaction}=\frac{0.25}{0.29}\times 100=86.2\%$

Thus the % yield is 86.2%