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Convert playlist Diction QUESTIONS 1. (2 Points) Why is it essential to keep the diazonium salt...
Calculate the theoretical yield for Orange II (mw= 422g/mol; experimental weight of orange II azo-dye=0.4g). EXPERIMENTAL...
Calculate the theoretical yield for Orange II (mw= 422g/mol;
experimental weight of orange II azo-dye=0.4g).
EXPERIMENTAL Calculate the theoretical yield before the lab. Caution: Orange II dyes clothing and other organic materials a permanent unique orange. As a measure of your technique, points may be subtracted for orange hands, etc. 1 DIAZOTIZATION OF SULFANILIC ACID Dissolve 0.4 g of anhydrous sodium carbonate in 7.5 mL of H.O. Use a 25 mL Erlenmever flask. 2. Add 0.45 g of sulfanilic acid...
what is the theoretical yield of Orange Dye II from this reaction? Here are the reactions...
what is the theoretical yield
of Orange Dye II from this reaction?
Here are the reactions in the sequence leading to Orange II: 1) Diazotization of sulfanilic acid CI II NH2 NH3 NaNO2 Na2CO3 H2о НCI SOo3 Na+ SO3 SO3 Na sulfanilic acid diazonium salt (aqueous zwitterionic form) 2) Dizaonium coupling with 2-naphthol Na O S O CI но N-N So3 Na 2-naphthol Но diazonium salt Orange Il dye ZEZ
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium s...
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium salt produced when sulfanilic acid is reacted with sodium nitrite and hydrochloric acid. Next draw the dye that is produced when the diazonium salt is reacted with the 2-naphthol anion. What is the name of this dye? 3. Which direct dyeing procedure worked best for Orange I1? Briefly explain. 4. Compare ing rain dyeing and direct dyeing with Orange II. Which worked...
can someone please answer number one? im so lost DYES AND DYEING CHAPTER 1. Calculate the...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
2. Draw the structure of the byproduct that would be formed if the reaction mixture were...
2. Draw the structure of the byproduct that would be formed if the reaction mixture were not kept in an ice bath during the azo coupling reaction. [2 pts) Methyl orange can be synthesized using an azo coupling reaction, which is an example of an electrophilic aromatic substitution (EAS). In an azo coupling, the electrophile is an aryldiazonium salt, and the nucleophile is another electron-rich aromatic compound (typically an aniline or phenol). In this experiment, sulfanilic acid will be converted...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic acid (aniline derivative) and 8-ani...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic
acid (aniline derivative) and 8-anilino-1-naphthalenesulfonic acid
(coupling agent). Write the mechanism.
SYNTHESIS OF AZO DYES INTRODUCTION Humans' love of color dates back almost to prehistoric times, yet it is not actually until the modern era that the full range of the rainbow has been accessible to the majority of people irn their clothes and other textiles. Ancient or medieval times have often been described as being quite splendid with their "tyrian purple"...
Would someone help me to solve these questions? Thanks in advanced Questions 1. Draw the mechanism...
Would someone help me to solve these questions? Thanks
in advanced
Questions 1. Draw the mechanism of the formation of the diazonium salt from sulfanilic acid. 2. Draw the mechanism of the reaction of N,N-dimethylaniline and the diazonium salt of sulfanilic acid to form the azo dye. 3. Why does the dimethylaniline couple with the diazonium salt at the para position of the ring? 4. What would be the result if copper (I) chloride were added to the diazonium salt...
This is a Synthesis of Azo Dyes lab EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you...
This is a Synthesis of Azo Dyes lab
EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you expect benzoic acid or anisole to be a more effective coupling reagent? Why? Anisole would be more effective coupling agent reagents than benzoic acid because anisole has o-cH₃ an electron donating group whereas benzoic acid have a 2-oh group attached to the benzene ring that acts as electron withdrawing group. 2. Most diazo coupling reactions do not work well in acidic solutions. Explain. 3....
This is a Synthesis of Azo Dyes lab EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you...
This is a Synthesis of Azo Dyes lab
EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you expect benzoic acid or anisole to be a more effective coupling reagent? Why? Anisole would be moe cffectiue canpling agent rensents thanbezei acid becase anisole has o-eHz an elect/on donating grou whelcas burzoie aci el have n ing that acts as clection withdrawins group. OM fe attached te cbenzene 2. Most diazo coupling reactions do not work well in acidic solutions. Explain. 3. What...
Thumbs up for good answer. Why does the liquid in the round bottom flask turn light...
Thumbs up for good answer. Why does the liquid in the round
bottom flask turn light pink?, please explain (This happened
during/after step 2). This is the procedure and the experiment is
called Synthesis of Artificial Flavorings by Fischer
Esterification.
Thank you!
SAMPLE PROCEDURES: 1. Isoanvl acetate (banana) + H2O OH HO 1. Mix 6 mL of isoamyl alcohol (0.809 g/mL, 88.148 g/mol) and 10 ml ofglacial acetic acid (1.05 g/ml 60.05 g/mol) in a 100 mL round bottom flask....
Calculate the theoretical yield for Orange II (mw= 422g/mol;
experimental weight of orange II azo-dye=0.4g).
EXPERIMENTAL Calculate the theoretical yield before the lab. Caution: Orange II dyes clothing and other organic materials a permanent unique orange. As a measure of your technique, points may be subtracted for orange hands, etc. 1 DIAZOTIZATION OF SULFANILIC ACID Dissolve 0.4 g of anhydrous sodium carbonate in 7.5 mL of H.O. Use a 25 mL Erlenmever flask. 2. Add 0.45 g of sulfanilic acid...
what is the theoretical yield
of Orange Dye II from this reaction?
Here are the reactions in the sequence leading to Orange II: 1) Diazotization of sulfanilic acid CI II NH2 NH3 NaNO2 Na2CO3 H2о НCI SOo3 Na+ SO3 SO3 Na sulfanilic acid diazonium salt (aqueous zwitterionic form) 2) Dizaonium coupling with 2-naphthol Na O S O CI но N-N So3 Na 2-naphthol Но diazonium salt Orange Il dye ZEZ
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium salt produced when sulfanilic acid is reacted with sodium nitrite and hydrochloric acid. Next draw the dye that is produced when the diazonium salt is reacted with the 2-naphthol anion. What is the name of this dye? 3. Which direct dyeing procedure worked best for Orange I1? Briefly explain. 4. Compare ing rain dyeing and direct dyeing with Orange II. Which worked...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
2. Draw the structure of the byproduct that would be formed if the reaction mixture were not kept in an ice bath during the azo coupling reaction. [2 pts) Methyl orange can be synthesized using an azo coupling reaction, which is an example of an electrophilic aromatic substitution (EAS). In an azo coupling, the electrophile is an aryldiazonium salt, and the nucleophile is another electron-rich aromatic compound (typically an aniline or phenol). In this experiment, sulfanilic acid will be converted...
1) Write a Reaction equation using 4- aminobenzenesulfulfonic
acid (aniline derivative) and 8-anilino-1-naphthalenesulfonic acid
(coupling agent). Write the mechanism.
SYNTHESIS OF AZO DYES INTRODUCTION Humans' love of color dates back almost to prehistoric times, yet it is not actually until the modern era that the full range of the rainbow has been accessible to the majority of people irn their clothes and other textiles. Ancient or medieval times have often been described as being quite splendid with their "tyrian purple"...
Would someone help me to solve these questions? Thanks
in advanced
Questions 1. Draw the mechanism of the formation of the diazonium salt from sulfanilic acid. 2. Draw the mechanism of the reaction of N,N-dimethylaniline and the diazonium salt of sulfanilic acid to form the azo dye. 3. Why does the dimethylaniline couple with the diazonium salt at the para position of the ring? 4. What would be the result if copper (I) chloride were added to the diazonium salt...
This is a Synthesis of Azo Dyes lab
EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you expect benzoic acid or anisole to be a more effective coupling reagent? Why? Anisole would be more effective coupling agent reagents than benzoic acid because anisole has o-cH₃ an electron donating group whereas benzoic acid have a 2-oh group attached to the benzene ring that acts as electron withdrawing group. 2. Most diazo coupling reactions do not work well in acidic solutions. Explain. 3....
This is a Synthesis of Azo Dyes lab
EXPERIMENT 8: SUPPLEMENTARY LAB QUESTIONS 1. Would you expect benzoic acid or anisole to be a more effective coupling reagent? Why? Anisole would be moe cffectiue canpling agent rensents thanbezei acid becase anisole has o-eHz an elect/on donating grou whelcas burzoie aci el have n ing that acts as clection withdrawins group. OM fe attached te cbenzene 2. Most diazo coupling reactions do not work well in acidic solutions. Explain. 3. What...
Thumbs up for good answer. Why does the liquid in the round
bottom flask turn light pink?, please explain (This happened
during/after step 2). This is the procedure and the experiment is
called Synthesis of Artificial Flavorings by Fischer
Esterification.
Thank you!
SAMPLE PROCEDURES: 1. Isoanvl acetate (banana) + H2O OH HO 1. Mix 6 mL of isoamyl alcohol (0.809 g/mL, 88.148 g/mol) and 10 ml ofglacial acetic acid (1.05 g/ml 60.05 g/mol) in a 100 mL round bottom flask....
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