ochem sodium borohydride reduction

Before connecting the 100 ml round flask to the

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2 respectively for more details. Before connecting the 100 mL round flask to the reflux apparatus the joint was washed using a small amount of methanol and a pipet in order to ensure that the glass joints did not fuse together. The solution was then heated on the steam bath, which was refluxed for about twenty minutes. While the solution was on the steam bath 50.03 mL of diethyl ether, about 50 mL of water, and 11mL of HCl were measured out. After the solution was removed from the steam bath 4 mL of 6M HCl was added to the solution. The solution was then tested to see if it was acidic enough using congo red litmus paper, which after a small amount of the solution was placed onto it turned blue. The reaction mixture was then transferred to a 250 mL Erlenmeyer flask and 50 mL of diethyl ether was added. It was then swirled and about 50 mL of water was also added in order to dissolve the solid boric acid and to make two visible layers. Due to the two distinct layers that formed the solution was once again transferred to a 500 mL separatory funnel and the swirling and venting technique was performed about 6 times. The aqueous layer was extracted into a labeled 250 mL Erlenmeyer flask. The organic layer was extracted into a separately marked Erlenmeyer flask. The contents of the aqueous layer Erlenmeyer flask was then poured back into the separatory funnel and sequentially 50 mL of ether was added. The solution was then swirled and vented and the aqueous layer followed by the organic layer were extracted using the method outlined above. This technique was again repeated. Anhydrous sodium was used to dry the solution. The solution was separated using
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