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

xf = 0.2. The mixture splits into an extract phase E and a raffinate

phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass

of the extract phase is (in Kg)

(A) 6.89

(B) 8.89

(C) 10

(D) 8.25

1 Answer

Answer :

(B) 8.89


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