An unknown mixture (dissolved in diethyl ether) contains only 2 of the following : benzoic acid,...
An unknown mixture (dissolved in diethyl ether) contains only 2 of the following : benzoic acid, phenol, aniline and napthalene. You use the acid-base extraction method and want to identify the 2 compounds in your original mixture.
1) To separate the organic acid you add NaOH and to separate the organic base you add HCl.In both cases these extractions are followed by extractions with water. Why do we add water? Why is this step important? (A clear explanation please).
2)When neutralizing the alkaline extractions we add HCl. The colour of the extractions changes from pink to orange. What does this indicate? Is there any reaction occuring? How can I tell from this reaction that the organic acid in the original mixture is phenol and not benzoic acid? (Answer should include terms like weak/strong, precipitation) What would I observe if my organic acid was benzoic acid? What do I observe in the case of phenol?
3)How do I tell if there is aniline in my original mixture after adding NaOH to neutralize the acidic extractions?
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An unknown mixture (dissolved in diethyl ether) contains only 2
of the following : benzoic acid,...
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Write a small introduction in words and a conclusion for this lab report Experiment 9 Acid-Base Extraction Liquid-liquid extraction utilizes the contrast solubilities of solutes in two immiscible...
Write a small introduction in words and a conclusion for this
lab report
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Construct a flow chart that follows the separation of a mixture
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From You have a mixture of benzoic acid, hexamethylenediamine, and 1-octanol dissolved in diethyl ether. You wish (for some reason) to separate these compounds and have pure samples of each. Devise a liquid-liquid extraction protocol that would allow you to do this. (up to 20 points) Your answer should be clear and concise. Ambiguous answers or those that are difficult to read will NOT receive points. Search entries or author Unread Subscribe Reply
Write a small introduction in words and a conclusion for this
lab report
Experiment 9 Acid-Base Extraction Liquid-liquid extraction utilizes the contrast solubilities of solutes in two immiscible solvents the separation of a mixture. An extracting solvent can be reactive that changes the character of solute. Consider a mixture of organic acid, organic base, and neutral substance, for example, benzoic acid, aniline, biphenyl, nd phenol. They sodium benzoate. Sodium hydroxide changes phenol to sodium phenoxide. Hydrochloric acid changes aniline to...
A student has a mixture of butanoic acid (liquid) and phenol ( ) (solid). The mixture is almost (1:1). The pas for both compounds are 4 -5 and 10 respectively. Both compounds are soluble in ether (organic solvent that is insoluble in water). Select the best technique to separate and recover each compounds. Recrystallization. Use strong basic water as a solvent and recover the solid while leaving the liquid behind. Add acid to recover the butanoic acid. Recrystallization. Use ether...
17. Draw a flow sheet to show how you would separate a mixture of benzoic acid, 2-naphthol, aniline, and naphthalene. (indicate the solvent, location and composition of each layer). Draw all balanced equations. (6') Reagents available: 3M hydrochloric acid solution, 3M sodium hydroxide solution, 3M sodium bicarbonate solution, saturated sodium chloride solution Solvent available: water, dichloromethane, ethanol, and diethyl ether.
17. Draw a flow sheet to show how you would separate a mixture of benzoic acid, 2-naphthol, aniline, and naphthalene....
Construct a flow chart that follows the separation of a mixture
of 2-nitrophenol (an organic acid not used in this experiment with
a pKa = 7.26) and anthracene (neutral organic). Use scheme 1 as a
template. Your reagents available are the same ones used in this
lab.
Scheme 1. The acid-base extraction of p-creol (an acidic phenol) and para-nitrotoluene (a neutral organic compound). OH 1. dissolve in TBME 2. Add NaOH/H,0 ON less dense TBME Layer Remove bottom laver Place...
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