3. A crude nonacidic product mixture dissolved in diethyl ether contains acetic acid. Describe an extraction...
Homework Answers
a) A crude nonacidic product mixture dissolved in diethyl ether contains acetic acid. Describe an extraction procedure that could be used to remove the acetic acid?
Add NaOH or NaHCO3 and separate the aqueous and organic layers. The sodium acetate thus formed is water-soluble and not soluble in ether, whereas acetic acid is soluble in both diethyl ether and water.
b. When the two layers form during an ether/water extraction, what would be an easy, convenient way to tell which layer is which if the densities were not available?
A water drop test can be used to determine which is the aqueous/organic layer. Remove a drop of the top/bottom layer and add it to the water taken in a bottle. If it dissolves, then t is the aqueous layer and vice versa.
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3. A crude nonacidic product mixture dissolved in diethyl
ether contains acetic acid. Describe an extraction...
2) For a mixture of 20 mL diethyl ether and of 5% sodium hydroxide in 20...
2) For a mixture of 20 mL diethyl ether and of 5% sodium hydroxide in 20 mL water two layers form. Based on densities, which layer is on the bottom? (3) Which layer will 4-nitrobenzoic acid be in. (4) Which layer will 4-nitrotoluene be in?
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...
For the portion of the procedure shown below, create a flow chart for the acid-base extraction...
For the portion of the procedure shown below, create a
flow chart for the acid-base extraction at the end of the Grignard
Reaction. Start your flow chart with the crude reaction (see below)
mixture before addition of HCl and continue it until the product is
recovered. Depict the desired organic product, in its correct form
at each step of the procedure.
Crude reaction mixture procedure for reference: To
the flask add Mg turnings (120 mg, 4.94 mmol) to the flask...
4. A mixture of dodecano ic acid and dodecan - 1 -ol is dissolved in diethyl ether. Suggest a procedure for separat...
4. A mixture of dodecano ic acid and dodecan - 1 -ol is dissolved in diethyl ether. Suggest a procedure for separating the two compounds. (1 point)
Extraction of benzoic acid and 9-fluorenone using diethyl ether. (please do not include ethyl 4- aminobenzoate)....
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...
Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid or Base...
Use
of Extraction to Isolate a Neutral Compound from a Mixture
Containing an Acid or Base Impurity.
Part 4D
Hi guys I had a question about this lab. I am not sure how to
create a flow chart for it as well as what chemical equations it
needs. please let me know if you need more information.
layer. In the Optional Exercise, the sample contains a neutrum base impurity; however, a detailed procedure is not given. If you are assigned...
5. Suppose you are trying to separate butanoic acid and 4-iodotoluene via extraction with diethyl ether...
5. Suppose you are trying to separate butanoic acid and 4-iodotoluene via extraction with diethyl ether and water. (a) Look up the structures and draw them below. Predict which reagent would have a greater preference/affinity for the diethyl ether layer (1 pt) (b) Which solvent will be on the bottom in the separatory funnel (or conical vial) (1 pt)? (c) U to the butanoic acid and which layer would it prefer- aqueous or o pon treatment of butanoic acid with...
As it says in question 2 could you please help me make a flow chart like...
As it says in question 2 could you please help me make a flow
chart like the provided example below?
2) For the portion of the procedure shown below, create a flow chart for the acid-base extraction at the end of the Grignard Reaction in a similar manner to the one on Canvas for the extraction lab. Start your flow chart with the crude reaction mixture before addition of HCl and continue it until the product is recovered. Depict the...
From You have a mixture of benzoic acid, hexamethylenediamine, and 1-octanol dissolved in diethyl ether. You...
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
Acid/Base Extraction 1. Provide a flow chart detailing the acid/base extraction/separation of the compounds shown below....
Acid/Base Extraction
1. Provide a flow chart detailing the acid/base
extraction/separation of the compounds shown below. Your answer
must employ the following reagents: methylene chloride,
hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M),
10% sodium bicarbonate (aq). Clearly indicate the product(s) and
layers formed following each step of your separation scheme.
IMPORTANT: p-cresol is soluble in sodium hydroxide solution but
insoluble in neutral water or sodium bicarbonate solution. 2-
ethylbenzoic acid is soluble in both sodium hydroxide and...
For the portion of the procedure shown below, create a
flow chart for the acid-base extraction at the end of the Grignard
Reaction. Start your flow chart with the crude reaction (see below)
mixture before addition of HCl and continue it until the product is
recovered. Depict the desired organic product, in its correct form
at each step of the procedure.
Crude reaction mixture procedure for reference: To
the flask add Mg turnings (120 mg, 4.94 mmol) to the flask...
4. A mixture of dodecano ic acid and dodecan - 1 -ol is dissolved in diethyl ether. Suggest a procedure for separating the two compounds. (1 point)
Use
of Extraction to Isolate a Neutral Compound from a Mixture
Containing an Acid or Base Impurity.
Part 4D
Hi guys I had a question about this lab. I am not sure how to
create a flow chart for it as well as what chemical equations it
needs. please let me know if you need more information.
layer. In the Optional Exercise, the sample contains a neutrum base impurity; however, a detailed procedure is not given. If you are assigned...
5. Suppose you are trying to separate butanoic acid and 4-iodotoluene via extraction with diethyl ether and water. (a) Look up the structures and draw them below. Predict which reagent would have a greater preference/affinity for the diethyl ether layer (1 pt) (b) Which solvent will be on the bottom in the separatory funnel (or conical vial) (1 pt)? (c) U to the butanoic acid and which layer would it prefer- aqueous or o pon treatment of butanoic acid with...
As it says in question 2 could you please help me make a flow
chart like the provided example below?
2) For the portion of the procedure shown below, create a flow chart for the acid-base extraction at the end of the Grignard Reaction in a similar manner to the one on Canvas for the extraction lab. Start your flow chart with the crude reaction mixture before addition of HCl and continue it until the product is recovered. Depict the...
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
Acid/Base Extraction
1. Provide a flow chart detailing the acid/base
extraction/separation of the compounds shown below. Your answer
must employ the following reagents: methylene chloride,
hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M),
10% sodium bicarbonate (aq). Clearly indicate the product(s) and
layers formed following each step of your separation scheme.
IMPORTANT: p-cresol is soluble in sodium hydroxide solution but
insoluble in neutral water or sodium bicarbonate solution. 2-
ethylbenzoic acid is soluble in both sodium hydroxide and...
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