A solvent stream containing $10\%$ by weight acetone and $90\%$ by weight chloroform is used to extract acetone from a feed containing $55wt\%$ acetone and $5wt\%$ chloroform with the remainder being water. The feed rate is $250k\frac{g}{h},$ while the solvent rate is $400k\frac{g}{h}.$ Operation is at $25C$ and atmospheric pressure. Find the extract and raffinate compositions and flow rates when one equilibrium stage is used for the separation.

Use graphical method.

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