Draw (R) and (S) 2-bromobutanc. Be sure to label each enantiomer. A student uses ether to extract an organic compound from the aqueous solution in a separatory funnel. Before evaporating the ether to isolate the solid organic compound, the student adds anhydrous sodium sulfate. What is the molecular formula of sodium sulfate? What is the purpose of adding it and how is it separated from the organic layer before the ether is evaporated? After a reaction, traces of the starling material diphenylamine were left in the organic layer. Would an aqueous solution of sodium bicarbonate be effective in removing traces of diphenylamine from the organic layer? Explain your answer by showing a chemical reaction between sodium bicarbonate and diphenylamine. A crude organic compound dissolved in diethyl ether (d = 0.715 g/mL) is poured into a separatory funnel. Deionized water (d = 1.000 g/mL) is added to the separatory funnel. Which layer contains the product?
You transferred the solution of benzoic acid and naphthalene in diethyl ether to the separatory funnel and added on top15 ml of 2.5 M NaOH solution. Where you would find the aqueous solution, at the top or at the bottom of the separatory funnel?
You transferred prepared solution of benzoic acid and naphthalene in diethyl ether to the separatory funnel and added on top15 ml of 2.5 M NaOH solution and you shook the separatory funnel. Where you would find the aqueous solution, at the top or at the bottom of the separatory funnel?
After completing the extraction the procedure in the textbook recommends you to transfer the organic solution into a clean Erlenmeyer flask. What is the composition of organic solution?
After completing the extraction the procedure in the textbook recommends you to transfer the aqueous layer into a clean Erlenmeyer flask. What is the composition of aqueous layer?
Possible answers for all above questions:
1.The aqueous layer is a solution of benzoic acid in water
2. The organic solution is a solution of sodium benxoate in 2.5M aqueous solution
3. The aqueous layer is a solution of sodium benzoate and excess of sodium hydroxide in water
4. Aqueous solution will be found at the bottom of the separatory funnel
5. The organic solution is a solution of aphthalene in diethyl ether
6.The aqueous layer is a solution of sodium benzoate in water
7.The organic solution is a solution of benzoic acid in diethyl ether
8. The organic solution is a solution of naphthalene an benzoic acid in diethyl ether