A student is given a mixture of benzoic acid, 3-nitroaniline and naphthalene to separate. The student dissolves the mixture in an organic solvent and adds NaOH to the solution. Two layers form. Which component(s) of the mixture remain in the organic solvent? Group of answer choices Benzoic acid and Naphthalene 3-Nitroaniline and naphthalene 3-Nitroaniline Naphthalene

A student is given a mixture of benzoic acid, 3-nitroaniline and naphthalene to separate. The student dissolves the mixture in an organic solvent and adds NaOH to the solution. Two layers form. Which component(s) of the mixture remain in the organic solvent? Group of answer choices Benzoic acid and Naphthalene 3-Nitroaniline and naphthalene 3-Nitroaniline Naphthalene

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter7: Extraction

Section: Chapter Questions

Problem 8Q

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A student is given a mixture of benzoic acid, 3-nitroaniline acid and naphthalene to separate. The student dissolves the mixture in an organic solvent and adds HCl to the solution. Two layers form. Which component(s) of the mixture remain in the organic solvent? Group of answer choices -naphthalene and benzoic acid -benzoic acid and 3-nitroaniline -naphthalene and 3-nitroaniline -naphthalene
Picture 1 )Provide the functional group contained in each lettered compound: Choices:acid halidealcoholalcohol and ketoneamideanhydridecarboxylic acidesterketone Question 2 Indicate whether an acid–base reaction takes place under each of the conditions given. Choices yesno A: phenol + waterB: phenol + NaOH C: diethyl ether + NaOHD: ethanoic acid + NaHCO3E: ethanoic acid + NaOHF: Ethanoic acid + water
Carboxylic acids are acidic enough to dissolve in both 10% NaOH and NaHCO3. Phenols, ArOH, are weak acids and most phenols will not dissolve in 10% NaHCO3. How would you separate a mixture of a carboxylic acid (RCOOH), an amine (RNH2), a phenol (ArOH) and a hydrocarbon (RH) using chemically active extraction? Draw a flow chart to illustrate your separation. Show each species in the aqueous and organic layers.
What is the name of the product formed by the titration of butylamine? Group of answer choices butyl ammonium ion butonium ion butanamide butylamide hydrogen butylamine butane amine ion
A. TESTS FOR METHYL ALCOHOL1. Salicylic Acid Test. Methyl alcohol with salicylic acid and concentrated sulfuric acid willgive methyl salicylate or oil of wintergreen, a compound with an odor of peppermint.In a test tube containing 0.2 gm of salicylic acid, add 1 ml. of concentrated sulfuric acid(CAUTION!). Introduce 1 ml. of methanol into the test tube. Result:? To make the odor more pronounced, pour the contents of the tube into a smallbeaker containing 20 ml. of water. What is the reaction called? Write the equation for the reaction of methyl alcohol with salicylic acid.
3. You are given a mixture of aspirin, phenol, and naphthalene that you need to separate. i) Draw the structures of each, and identify if they are acidic, basic, or neutral compounds. For each compound draw their reaction with the appropriate acidic or basic conditions that will change their solubility and allow them to be separated. ii) What modifications would you have to make to the experimental protocol in order to separate these three compounds? Provide specifics.
Give reasons: (i) Bond length of C = O in carboxylic acids is slightly larger than C = O bond length in carbonyl compounds. (ii) There are two –NH2 groups in semicarbazide. However, only one –NH2 group is involved in the formation of semicarbazones. (iii) Benzoic acid is less soluble in water than acetic acid. (iv) Formic acid is a stronger acid than acetic acid.
Acetic acid, salicylic acid, benzoic acid all of them undergo esterification test separately with n-propyl alcohol and concentrated sulfuric acid. Which among the three is the fastest in showing the formation of pleasant odor. Arrange them from fastest to slowest. Explain and support your answer
The mixture contains benzoic acid, 2-napthol, and naphthalene. Dissolve the mixture in the polar solvent ether. When you react the mixture with 10% NaHCO3(sodium bicarbonatea weak base in aqueous solution) reacts with benzoic acid and forms sodium benzoate an ionic compound (similar to NaCl) that dissolves in aqueous solution (heavier than ether in density) and goes to the bottom of the centrifuge tube or to the bottom of the separatory funnel forming two layers. Then remove the bottom aqueous layer and collect in a beaker labeled as bicarbonate extract. Acidify the bicarbonate extract in the beaker to give benzoic acid. The top ethereal layer contains in the centrifuge tube or separatory funnel 2-napthol and naphthalene. To this top layer add 10% NaOH (sodium hydroxideis a strong base in aqueous solution reacts with only 2-napthol, a weak acid forming 2-napthoxide an ionic compound soluble in aqueous solution (similar to NaCl) that goes to the bottom of the centrifuge tube or to…
1. Write the observations and results when (a)Fumaric Acid is reacted with Sodium Hydroxide,(b)when reacted with Sodium Bicarbonate. Write also the reaction equations. 2. Solubility of Amines in AcidPut 2 ml of water in a 10x75-mm test tube. Add 5 to 10 drops of aniline. Add 6 N hydrochloric acid dropwise until the aniline dissolves. Then add 6 N sodium hydroxide until the aniline reappears. Write the observations/results in this experiment and the reaction equation.
Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. a. 2-phenylacetaldehyde is soluble with concentrated sulfuric acid due to acid-base neutralization. b. 2-phenylacetic acid has a solubility classification of A2, which means it is soluble in 5.O%NaOH and insoluble in 5.O% NaHCO3. c. Scratching the inner sides of the beaker to begin recrystallization is advised for unsaturated solutions. d. Washing with hot solvent eliminates adhered mother liquor and avoids crystal dissolution. e. To extract a nonpolar organic compound using solvent extraction, the extracting solvent must be nonpolar, and the washing solvent must be also nonpolar. f. Addition of 6.0 M NaCl extracts saponins by converting them to their salt form. g. The stationary phase in the paper chromatography experiment is the filter paper. h. When the spots have low concentration, they will not be observed as visible spots in the…
1. outline a procedure for separating a mixture of naphthalene (a neutral compound), toluic acid (an acidic compound), and p-bromoaniline (a basic compound). Assume that toluic acid and p-bromoaniline are completely insoluble in water. 2. The solubility of Lorazepam (a tranquilizer found in Emotival , Lorax, Wypax, and other prescription medicines) is 0.08mg/mL and 2.62mg/mL, in water and chloroform, respectively. Estimate the partition coefficient of lorazepam between chloroform and water. 3. The solubility of benzoic acid at 25 degrees Celsius in water and diethyl ether is 3.35 mg/mL and 0.353 g/mL, respectively. Estimate the percent recovery of benzoic acid in the organic phase, if a solution of benzoic acid in water is extracted with an equivalent volume of ether. [HINT-pay attention to the units] 4. The solubilities of cholesterol in water and chloroform are 0.550mg/100mL and 1.00g/5.25mL, respectively. Estimate the partition coefficient of cholesterol between chloroform and…