a) If choosing between Dichloromethane and diethyl ether for an extraction solvent, which presents the least...
a) If choosing between Dichloromethane and diethyl ether for an
extraction solvent, which presents the least hazard to your
health?
b) If choosing between ethyl ether and dichloromethane for an
extraction solvent, which is safer when considering
flammability?
c) Is benzoic acid a solid or liquid at room temperature?
Homework Answers
a) Diethyl ether has a lower toxicity, since only at very high concentrations can it cause damage.
b) Dichloromethane is safer considering flammability.
c) Under normal conditions it is a solid.
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a) If choosing between Dichloromethane and diethyl ether for an
extraction solvent, which presents the least...
1)When you perform a liquid-liquid extraction using a separatory funnel, which of the following organic solvent...
1)When you perform a liquid-liquid extraction using a separatory funnel, which of the following organic solvent is on the bottom of the aqueous phase and which is on top? (write your answer by the solvent name) a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether 2) If you are performing a liquid-liquid extraction and you have a mix of a carboxylic acid and a non-acidic compound, which combination of solvents would you use for the separation? a) dichloromethane/HCI b)...
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...
(4pts) When you perform a liquid-liquid ext 17) which of the following organic solvent is on...
(4pts) When you perform a liquid-liquid ext 17) which of the following organic solvent is on the bottoming a extraction us which is on top? (write your answer by the solvent name p a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether a liquid-liquid extraction and you have a 18) (3pts) If you are performing carboxylic acid and a non-acidic compound, which combinat you use for the separation? of solvents a) dichloromethane/HCI b) dichloromethane/methanol c) dicholoromethane/NaOH d) NaOH and...
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...
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...
A liquid-liquid extraction is performed according to the schematic below. Which compound(s) should we expect to...
A liquid-liquid extraction is performed according to the schematic below. Which compound(s) should we expect to find in layer B? You can assume 100% of each compound is separated into its respective layer. benzoic acid diethyl ether biphenyl 5% NaOH (aq) Aqueous Organic Layer A 6 M HCl(aq) Aqueous Organic Layers C & D secondom i Vacuum Filtration Benzoic Acid
You will apply what you have learned earlier in the semester when performing the Acid-Base Extraction...
You will apply what you have learned earlier in the semester when performing the Acid-Base Extraction experiment to perform a different separation: that of an organic neutral compound and organic base. You will also need to purify and characterize these compounds. You will have one lab period to execute your plan for separating the assigned mixture given below. There will be a 1:1 (by mass) mixture placed in the lab: 1,4-dichlorobenzene/ethyl 4-aminobenzoate. You will take approximately 1 g of your...
Provide a flow chart detailing the acid/base extraction/separation of the compounds show below. Your answer must...
Provide a flow chart detailing the acid/base extraction/separation of the compounds show 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 sodium bicarbonate solutions. Use...
Acid/Base Extraction ACID/BASE EXTRACTION Provide a flow chart detailing the acid/base extraction/separation of the compounds shown...
Acid/Base Extraction
ACID/BASE EXTRACTION 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. HINT: phenol is soluble in sodium hydroxide solution but insoluble in neutral water or sodium bicarbonate solution. Benzoic acid is soluble in both sodium hydroxide and...
Started dissolving mixture with diethyl ether. And shook 3M HCL in sep funnel. Collected. Now: 1)...
Started dissolving mixture with diethyl ether. And shook 3M
HCL in sep funnel. Collected.
Now:
1) You added NaOH to organic phase collected in problem 2 to
extract another compound,
Which compound was extracted in NaOH solution? Justify with
chemical equation
2) to the aqueous phase you added HCL solution until it’s ph
was less than 7. What happens if it’s ph is 7 or above?
3) when you acidified the solution by adding HCL, a white
precipitate was produced....
1)When you perform a liquid-liquid extraction using a separatory funnel, which of the following organic solvent is on the bottom of the aqueous phase and which is on top? (write your answer by the solvent name) a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether 2) If you are performing a liquid-liquid extraction and you have a mix of a carboxylic acid and a non-acidic compound, which combination of solvents would you use for the separation? a) dichloromethane/HCI b)...
(4pts) When you perform a liquid-liquid ext 17) which of the following organic solvent is on the bottoming a extraction us which is on top? (write your answer by the solvent name p a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether a liquid-liquid extraction and you have a 18) (3pts) If you are performing carboxylic acid and a non-acidic compound, which combinat you use for the separation? of solvents a) dichloromethane/HCI b) dichloromethane/methanol c) dicholoromethane/NaOH d) NaOH and...
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...
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...
A liquid-liquid extraction is performed according to the schematic below. Which compound(s) should we expect to find in layer B? You can assume 100% of each compound is separated into its respective layer. benzoic acid diethyl ether biphenyl 5% NaOH (aq) Aqueous Organic Layer A 6 M HCl(aq) Aqueous Organic Layers C & D secondom i Vacuum Filtration Benzoic Acid
Provide a flow chart detailing the acid/base extraction/separation of the compounds show 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 sodium bicarbonate solutions. Use...
Acid/Base Extraction
ACID/BASE EXTRACTION 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. HINT: phenol is soluble in sodium hydroxide solution but insoluble in neutral water or sodium bicarbonate solution. Benzoic acid is soluble in both sodium hydroxide and...
Started dissolving mixture with diethyl ether. And shook 3M
HCL in sep funnel. Collected.
Now:
1) You added NaOH to organic phase collected in problem 2 to
extract another compound,
Which compound was extracted in NaOH solution? Justify with
chemical equation
2) to the aqueous phase you added HCL solution until it’s ph
was less than 7. What happens if it’s ph is 7 or above?
3) when you acidified the solution by adding HCL, a white
precipitate was produced....
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