[cabaal]

Q: What is the volume of ether required to extract 0.95 g of aspirin from 1.0 g of aspirin in 100 mL of water, in a single extraction? K_D=C_Ether/C_Water

A: 3.5 = [Ether]/[Water] = (0.95 g aspirin / V_Ether) / [(1.00 g aspirin - 0.95 g aspirin) / 100 mL Water] ==> V_Ether = 543 mL

Is this correct? My textbook doesn't cover extraction coefficients so this is kind of a guess. Thank you.

[cabaal]

K_D = 3.5.