Cyclohexylacetic acid

03 Work-up of Cyclohexylacetic acid 9 Points
Nathan is working up a reaction that has 0.05 g of cyclohexylacetic acid (a contaminant he must remove or it will interfere with the next step of his synthesis). He decides to extract his DCM (methylene chloride) reaction with saturated sodium bicarbonate (NaHCO3) and he previously determined that the partition coefficient (K) for this extraction is 0.25.
03.1
3 Points
He extracts his 100 mL reaction with 100 mL of saturated NaHCO3.
What mass of the contaminant acid will remain in the DCM layer? (Please enter your answer in grams and upload a copy of your calculations)
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03.2
6 Points
Nathan's adviser comes in as he's doing his extractions and is confused as to why he's only doing one wash. He suggests that Nathan should wash with the same total volume of NaHCO3, but use 1/3 of it in 3 successive washes.
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How much cyclohexylacetic acid will remain in the DCM layer after 3 successive washes with 33.3 mL sat. NaHCO3? (Please enter your answer in grams and upload a copy of your calculations)