In a single stage extraction process, 10 kg of pure solvent S (contain – McqOptions

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1.	In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction x f = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at x B = 0.5 and x R = 0.05 respectively. The total mass of the extract phase is (in Kg)
A.	6.89
B.	8.89
C.	10
D.	8.25
Answer» C. 10

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