Question: A 40% IPA solution in cyclohexane is extracted with water in a countercurrent multiple contact extraction unit. The mass ratio of the feed to water

A 40% IPA solution in cyclohexane is extracted with water in a countercurrent multiple contact extraction unit. The mass ratio of the feed to water is 5.25 . and the equilibrium data are as given in Figure. Determine the number of ideal stages required and the mass pereentages of the first extract if the final raffinate contains 20% of IPA. Note: To draw new tie lines. you must create a conjugate curve

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