A mixture of two compounds, A and B, was separated by extraction. After the compounds were dried, their masses were found to be: 117 mg of compound A and 91 mg of compound B. Both compounds were recrystallized and weighed again. After recrystallization, the mass of compound A was 91 mg and the mass of compound B was 77 mg. Calculate the percent recovery from recrystallization for both compounds.
% recovery A = (91/117)*100 = ?
% recovery B = (77/91)*100 = ?
To calculate the percent recovery from recrystallization for each compound, we need to compare the mass of the recrystallized compound to the initial mass before recrystallization.
For compound A:
- Initial mass before recrystallization = 117 mg
- Mass after recrystallization = 91 mg
Percent recovery for compound A = (Mass after recrystallization / Initial mass before recrystallization) * 100
= (91 mg / 117 mg) * 100
For compound B:
- Initial mass before recrystallization = 91 mg
- Mass after recrystallization = 77 mg
Percent recovery for compound B = (Mass after recrystallization / Initial mass before recrystallization) * 100
= (77 mg / 91 mg) * 100
To find the percent recovery for both compounds, we can substitute the given values:
Percent recovery for compound A = (91 mg / 117 mg) * 100
Percent recovery for compound B = (77 mg / 91 mg) * 100
Calculating these values will give us the percent recovery for both compounds from the recrystallization process.