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

86%

Step-by-step explanation:

Answer 2

Answer: Thus the % yield is 86.2%

Step-by-step 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}}* 100`

Given : Actual pressure increase = 0.25 atm

Theoretical pressure change = 0.29 atm.

`\%\text{ yield of reaction}=(0.25)/(0.29)* 100=86.2\%`

Thus the % yield is 86.2%