Question

You have a sample of contaminated benzoic acid that weighs 2.014 g. After performing a proper recrystallization with proper drying, the mass of your purified benzoic acid is 1.611 g. What is your percent recovery rounded to the nearest tenths

Answer 1

Answer: The percent recovery of benzoic acid is 80.0 %

Explanation:

To calculate the percent recovery of the sample, we use the equation:

$\text{Percent recovery of the sample}=\frac{\text{Mass of purified sample}}{\text{Mass of contaminated sample}}\times 100$

Mass of purified sample = 1.611 g

Mass of contaminated benzoic acid = 2.014 g

Putting values in above equation, we get:

$\text{Percent recovery of the sample}=\frac{1.611g}{2.014g}\times 100=79.99\%=80.0\%$

Hence, the percent recovery of benzoic acid is 80.0 %