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could you do separation scheme for this? bisulfite if the aqueous layer tests po

ID: 885962 • Letter: C

Question

could you do separation scheme for this?

bisulfite if the aqueous layer tests positive, until a negative test is achieved, no color change Procedure WASTE REMINDER: Dispose o the designated waste container. No this lab should be poured down the sink. waste from Carefully transfer contents to a separatory funnel. Add 1-2 mL of ethyl acetate to the reaction flask, swirl and add this wash to the separatory funnel. Shake and invert the eparatory funnel and separate the layers by draining the aqueous layer from the bottom. Pour the organic layer out of the top into a clearn Erlenmeyer flask. Clamp a 50 mL round bottom flask to a ring d and position a stir plate beneath it. Plac vane in the flask and add 500 mg of (IR)- d spin horneol. Add 2 mL ethyl acetate and begin stiring to dissolve borneol. Add 1.2 g (2.0 mmol) of Oxone& to the flask with continued stirring. When the molecular formula of Oxone® is taken in to account, 1.95 mmol Extract the aqueous layer twice more with 5 mL of ethyl acetate each time. Return the combined organic phases to the separatory funnel and wash three times with 5 mL portions of saturated aqueous sodium chloride solution (brine). Pour the organic phase into a clean Erlenmeyer flask and dry over magnesiunm sulfate corresponds to 3.9 mmol of KHSOs Next, add 0.08g of sodium chloride and 1.5 m of water. Allow the reaction to stir at roorm temperature for 50 minutes. Then add an additional 0.03 g NaCI. Continue to stir for 10 more minutes and note any changes in color or temperature during the entire procedure Prepare yourself for laboratory: Question #2 The reaction should be complete and any exce oxidant can be destroyed. Add 15 mL of deionized water to the reaction and continue stirring to dissolve most of the salts. Slowly add a spatula tip of solid sodium bisulfite to reduce the oxidants that remain. Test the aqueous layer by dipping a glass stir rod into it and then touching a piece of starch-iodine paper. A blue- black color, positive test, indicates the presenc of excess oxidant; add small amounts of sodium What is the proper way to dispose of the aqueous layers from the extraction steps? Filter the solution via gravity filtration into a tared Erlenmeyer flask. In the hood, heat gently on the hot plate to remove the ethyl acetate solvent. Excessive heating can lead to sublimation and product loss. It is important to monitor the concentration step carefully

Explanation / Answer

I think you can separate them by filtration.

Let the solution pass through filter paper. All aqueous layer will fall down and particles can be separated as filtrate.

You can even use gravity filtration.

In this case, particle being heavier settles down and water can be thrown away from top.

There can be many other methods