Acetic acid will be extracted from acetic acid-water solution containing by mass, in parallel flow extraction unit using partially miscible ethyl acetate. What is the composition of the extract at the exit of the 1st stage (E1), given that a mass of solvent equal to the feed is used in each stage? Acetic acid will be extracted from acetic acid-water solution containing by mass, in parallel flow extraction unit using partially miscible ethyl acetate. What is the composition of the extract at the exit of the 1st stage (E1), given that a mass of solvent equal to the feed is used in each stage