id dissolved in 150 mL of water. This solution is placed in a separatory funnel,
ID: 1085343 • Letter: I
Question
id dissolved in 150 mL of water. This solution is placed in a separatory funnel, and then 100 mL of diethyl ether is added to the separatory funnel and an extraction is performed (diethyl ether and water are immiscible). Use the following constants to calculate how much oxalic acid is in solvent after the extraction: each Solubility ofoxalic acid in water= 9.5 g/100mL Solubility of oxalic acid in ether 16.9g/100mL Briefly describe how you can tell which layer is the aqueous layer after performing an extraction. 2. 3. Would it be possible to use ethanol instead of methylene chloride to do a liquid-liquid extraction of an aqueous solution? Explain why or why not.Explanation / Answer
2. The density of ether is less than water. Hence in the separating funnel the wateor aqueous layer lies below ether layer. Ether being immissible in water lies above water.
3. Ethanol cannot be used because ethanol is forms azeotropic mixture with water. Ethanol is upto a limit missible in water on account of its intermolecular hydrogen bonding.
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