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![E I The Premate obtained in the first step of the excedrin seperation contains - I B] Aspirin and cufferine I The curfeine Ne](http://img.homeworklib.com/questions/782a5fc0-7377-11ea-bcbf-5f903983950c.png?x-oss-process=image/resize,w_560)
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[6) Which of the following compound is a strong acid? COOH B. None of the above...
known as Wer flask paratory funnel L. Røund bottom flask D. Beaker [2] _ is used...
known as Wer flask paratory funnel L. Røund bottom flask D. Beaker [2] _ is used to precipitate Aspirin in an aqueous layer. A. Ethanol B. Hydrochloric acid (C. Sodium bicarbonate D. Calcium chloride [3] Which of the following drying agent was used during caffeine extraction experiment? NA sodium bicarbonate B. Excedrin C. calcium chloride D. Sodium bisulphate [4] Which of the following organic solvent is used to extract caffeine from aqueous layer? NA chloroform B. haxane C. Toluene D....
Extraction of solids: Experiment outlined below Draw a “roadmap” of the experiment, containing chemical structures and...
Extraction of solids: Experiment outlined below
Draw a “roadmap” of the experiment, containing chemical
structures and “layers” (organic and aqueous). This should contain
the individual reactions occurring in each step, and show which
layer the various components are present. Make sure you think about
whether the acetaminophen, caffeine and aspirin are neutral,
protonated or deprotonated.
Preliminary separation obtain a sample (1.0g) of the mixture. weigh the sample and record it. this sample should consist of a 2:1:1 mixture (by mass)...
Which of the following substituents is a strong deactivator? A) -COOH B) -Cl C) -OCH3 D)...
Which of the following substituents is a strong deactivator? A) -COOH B) -Cl C) -OCH3 D) -NO2 E) none of the above
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...
5 tributor of the following Which is the correct resonance cont compound? D) None of the...
5 tributor of the following Which is the correct resonance cont compound? D) None of the Above D y cooh Which is the strongest acid? А) сносн,он NO, B) CH.COOH c) CI-CH.COOH E) Both C and D @ which is the product of 1,4- addition of the following reaction? CH=CH-CH=CH, HBr , ? A) CH₃-CH-CH=CH2 () CH₃ -CH=CH-CH₂Br. B) CH₂ Br-CH₂-CH=CH₂ D) All of the Above © which is the major product of the following more Bay E) No Reaction...
In the first step of fatty acid oxidation, the fatty acid (R-COOH) is converted to its...
In the first step of fatty acid oxidation, the fatty acid (R-COOH) is converted to its coenzyme A derivative in the following reaction: R-COOH + ATP + COA-SH -->R-CO-S-COA+AMP+PP The standard free-energy change (Delta G") for this reaction is -15 kJ/mol. Another reaction drives the reaction forward to a greater extent. This reaction is: A. Pyrophosphate is hydrolyzed to 2 phosphate molecules B. AMP is hydrolyzed to adenine C. The fatty CoA precipitates to remove it from the product side...
the following compound i ontributor of the following 5 Which is the correct resonance conth compound?...
the following compound i
ontributor of the following 5 Which is the correct resonance conth compound? D) None of the Above соон Which is the strongest acid? А) сносн,он NO, B) CH. COOH c) CI-CH.COOH E) Both C and D @ which is the product of 1,4- addition of the following reaction? CH=CH-CH=CH, HBr , ? A) CH₃-CH-CH=CH2 () CH₃ -CH=CH-CHBr. B) CH. Br-CH-CH=CH D) All of the Above which is the major product of the following reaction? E) No...
classify each of the following as a primary CH-CHE The compound CH -CH-CH-CH-COOH is called a...
classify each of the following as a primary
CH-CHE The compound CH -CH-CH-CH-COOH is called a 3-hexanoic acid b. 2-ethyl pentancate C. 2-ethyl pentanoic acid d. 3-heptanoic acid e 4 -heptanoic acid (ioni 2 Fien) 5. Which equation correctly represents the dissociation of a carbovie acid? CH - -OH a CH-COOH + HO-CHY-COOH, OH b. CHY-COOH-CH.COO + H,0 c CH-COOH + H2O - CH-COO + H,09 d. CHỊ-COOH + HBO - CH2-COOH + MO e CH-COOH +24,0 - CH-C00+ 2H,0*...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two weak acids. B) A buffer can absorb an unlimited amount of base. C) A buffer resists pH change by neutralizing added acids and bases. D) A buffer does not change pH when strong acid is added. E) None of the above are true. In which of the following solutions would solid would solid PbBr_2 be expected to be the least solution 25 degree C?...
given Which is more stable? Position A/ Position B (circle one) COOH COOH Which is more...
given
Which is more stable? Position A/ Position B (circle one) COOH COOH Which is more stable? Position A/ Position B (circle one) 9. Given the results of the previous problems, if an ELECTRON DONATING group is already attached to benzene, it is more stable to add the electrophile to the _position(s). Look at positions A and B in the previous problems. a. Ortho b. Meta C. Para d. Two of the above e. None of the above 10. If...
known as Wer flask paratory funnel L. Røund bottom flask D. Beaker [2] _ is used to precipitate Aspirin in an aqueous layer. A. Ethanol B. Hydrochloric acid (C. Sodium bicarbonate D. Calcium chloride [3] Which of the following drying agent was used during caffeine extraction experiment? NA sodium bicarbonate B. Excedrin C. calcium chloride D. Sodium bisulphate [4] Which of the following organic solvent is used to extract caffeine from aqueous layer? NA chloroform B. haxane C. Toluene D....
Extraction of solids: Experiment outlined below
Draw a “roadmap” of the experiment, containing chemical
structures and “layers” (organic and aqueous). This should contain
the individual reactions occurring in each step, and show which
layer the various components are present. Make sure you think about
whether the acetaminophen, caffeine and aspirin are neutral,
protonated or deprotonated.
Preliminary separation obtain a sample (1.0g) of the mixture. weigh the sample and record it. this sample should consist of a 2:1:1 mixture (by mass)...
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...
5 tributor of the following Which is the correct resonance cont compound? D) None of the Above D y cooh Which is the strongest acid? А) сносн,он NO, B) CH.COOH c) CI-CH.COOH E) Both C and D @ which is the product of 1,4- addition of the following reaction? CH=CH-CH=CH, HBr , ? A) CH₃-CH-CH=CH2 () CH₃ -CH=CH-CH₂Br. B) CH₂ Br-CH₂-CH=CH₂ D) All of the Above © which is the major product of the following more Bay E) No Reaction...
In the first step of fatty acid oxidation, the fatty acid (R-COOH) is converted to its coenzyme A derivative in the following reaction: R-COOH + ATP + COA-SH -->R-CO-S-COA+AMP+PP The standard free-energy change (Delta G") for this reaction is -15 kJ/mol. Another reaction drives the reaction forward to a greater extent. This reaction is: A. Pyrophosphate is hydrolyzed to 2 phosphate molecules B. AMP is hydrolyzed to adenine C. The fatty CoA precipitates to remove it from the product side...
the following compound i
ontributor of the following 5 Which is the correct resonance conth compound? D) None of the Above соон Which is the strongest acid? А) сносн,он NO, B) CH. COOH c) CI-CH.COOH E) Both C and D @ which is the product of 1,4- addition of the following reaction? CH=CH-CH=CH, HBr , ? A) CH₃-CH-CH=CH2 () CH₃ -CH=CH-CHBr. B) CH. Br-CH-CH=CH D) All of the Above which is the major product of the following reaction? E) No...
classify each of the following as a primary
CH-CHE The compound CH -CH-CH-CH-COOH is called a 3-hexanoic acid b. 2-ethyl pentancate C. 2-ethyl pentanoic acid d. 3-heptanoic acid e 4 -heptanoic acid (ioni 2 Fien) 5. Which equation correctly represents the dissociation of a carbovie acid? CH - -OH a CH-COOH + HO-CHY-COOH, OH b. CHY-COOH-CH.COO + H,0 c CH-COOH + H2O - CH-COO + H,09 d. CHỊ-COOH + HBO - CH2-COOH + MO e CH-COOH +24,0 - CH-C00+ 2H,0*...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two weak acids. B) A buffer can absorb an unlimited amount of base. C) A buffer resists pH change by neutralizing added acids and bases. D) A buffer does not change pH when strong acid is added. E) None of the above are true. In which of the following solutions would solid would solid PbBr_2 be expected to be the least solution 25 degree C?...
given
Which is more stable? Position A/ Position B (circle one) COOH COOH Which is more stable? Position A/ Position B (circle one) 9. Given the results of the previous problems, if an ELECTRON DONATING group is already attached to benzene, it is more stable to add the electrophile to the _position(s). Look at positions A and B in the previous problems. a. Ortho b. Meta C. Para d. Two of the above e. None of the above 10. If...
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