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Solvent lean phase are known as

(a) Extract

(b) Raffinate

(c) Residue

(d) None of the mentioned

This question was posed to me by my school teacher while I was bunking the class.

Origin of the question is Extraction-Liquid Liquid Equilibria topic in section Liquid Extraction of Mass Transfer

1 Answer

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by (39.8k points)
The correct option is (b) Raffinate

Easy explanation: The extracted solute will be rich in a solvent rich phase known as extract. Remaining small quantity of solute present in the solvent lean phase is known as raffinate.

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