In retrieving the compound (benzoic acid) from the aqueous phase, what is the reason for having precipitation after adding HCl in the aqueous phase?
A) Carboxylate salt is less soluble in acid, so it forms precipitate after adding HCl.
B) NaCl is formed after adding in HCl, and it is the precipitate.
C) Carboxylate salt is neutralized after adding HCl, becomes less soluble in water and precipitates out.
Answer is 'C'
Carboxylate salt is neutralized after adding HCl, becomes less soluble in water and precipitates out.
In retrieving the compound (benzoic acid) from the aqueous phase, what is the reason for having...
. Which of the following statements is not true regarding benzoic acid acids? a. The neutral acid is the predominant species in aqueous solution at pH <2. b. The anionic carboxylate is the predominant species in aqueous solution at pH >7. c. Sodium benzoate is less soluble in water than benzoic acid. d. Benzoic acid is extracted out of diethyl ether by treatment with aqueous sodium bicarbonate. ANSWER: c Can you explain why the answers a,b,d are wrong please
After the addition of aqueous acid, the product, vanillyl alcohol, precipitates out of the solution. Draw the structure of vanillyl alcohol. Explain why the alcohol is much less soluble in aqueous acid than the salt of vanillin.
1. After my solubility experiment, I got these results: D-glucose and benzoic acid were dissolved in NaOH while sodium benzoate, 2-naphthol, and ethanol were not dissolved in NaOH. Are the results correspond to theoretical results? And also, what are the reasons for each solute's solubility in NaOH? (i need a justification) 2. During the experiment, I dissolved an unknown compound in five different solvents including water, diethyl ether, aqueous HCl, aqueous NaOH, and aqueous NaHCO3. The results were: Unknown Water...
13. A solution of naphthalene, aniline, and benzoic acid in CH;Cl2 is treated with aqueous NaOH. What compound is extracted into the aqueous layer? NH2 он naphthalene benzoic acid aniline a. naphthalene b. aniline, as its sodium salt c. benzoic acid, as its sodium salt d. aniline and naphthalene 14. Which of the following Sy1 reactions did the Spartan program predict to have the lowest energy (AHrn, kcal/mol)? a. CH;CH;CH;CH;CI → CH;CHCH;CH, + Cr b. CH;CH;CHCICH3 CH;CH2CHCH, + Cr to...
Let's assume you have a mixture of equal parts benzoic acid, sand and toluene that are intimately mixed together (the crude material is a mixture of solid and liquid). Propose a procedure to separate these three components using any of the chemicals commonly available (you've used all of the "common" chemicals in the lab by now) in the organic chemistry teaching laboratories and observing the typical limitations with the instruments and techniques (such as not being able to distill or...
Extraction of benzoic acid and 9-fluorenone using diethyl ether. (please do not include ethyl 4- aminobenzoate). I have to create a flow chart to diagram the key steps of the experiment and isolation of products. 0.100g of benzoic acid and 9-fluorenone are dissolved in diethyl ether. The extraction solvent is 5% sodium hydroxide (to extract the acidic component from the organic phase). Saturated sodium chloride is added to the organic layer. drying the organic solution: anhydrous sodium sulfate is added...
Okay, so we had solid benzoic acid, ethyl 4- aminobenzoate, and 9-fluorenone all dissolved in diethyl ether (4ml). We separated the basic component by adding 3M HCl, we separated the acidic component by adding 3M NaOH. I don't understand what happens here. To isolate the acidic solution, we added 6 M NaOH and used the vacuum to recover the solid. To isolate the basic solution we added 6M HCl. Here are the questions I am having trouble with... • Why...
we have 1.5 g final product for following experiment. how can I draw acid- base curve for following experiment? Experimental procedure Weigh approximately 2.5 gof benzoic acid contaminated withtable salt (NaCl) as precisely as possible (record the exact quantity). Transfer the solid to a 100 mL separatory funnel and add 30 mL of ethyl acetate. In a 50 mL beaker, add 20 mL of water and 1.0 mL of 3 M hydrochloric acid. Transferthe mixtureto the separatory funnel. The solid...
Construct a flow chart describing the seperation of the
mixture and the isolation of each compound in this experiment. (Lab
steps/procedures includes for reference)
4. Construct a flow chart describing the separation of the mixture and the isolation of each compound in this experiment. A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at some stage of product purification. In this experiment you will use extraction...
Please help I need to fill in the blanks by using the compounds
and producers below the picture. Thanks!
422 (4 pts) Using the flow-chart below, outline a separation of Benzoic acid (s) (1), benzyl amine d) (2), and Naphthalene (s) (3). From the list of procedural steps below, write the letter corresponding to each procedure in the appropriate Ellipse boxes. Each procedure ma once, more than once or not at all. Usi corresponding to each structure in the appropriate...