A mixture of two compounds, a and b, was separated by extraction. after the compounds were dried, their masses were found to be: 105 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 83 mg. calculate the percent recovery from recrystallization for both compounds.

Question

Chemistry

Salazar

20 June, 08:24

A mixture of two compounds, a and b, was separated by extraction. after the compounds were dried, their masses were found to be: 105 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 83 mg. calculate the percent recovery from recrystallization for both compounds.

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Park · Answer 1

M₁ (A) = 105 mg.

m₂ (A) = 91 mg.

The percent recovery from recrystallization A: 91 mg : 105 mg · 100%.

The percent recovery from recrystallization A: 86,6%.

m₁ (B) = 91 mg.

m₂ (B) = 83 mg.

The percent recovery from recrystallization B: 83 mg : 91 mg · 100%.

The percent recovery from recrystallization B: 91,2%.