A compound gives a positive test with Brady's reagent, but a negative test with Tollens' reagent....
A compound gives a positive test with Brady's reagent, but a negative test with Tollens' reagent. It is therefore:
Group of answer choices
an aldehyde
a ketone
neither an aldehyde nor a ketone
Homework Answers
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A compound gives a positive test with Brady's reagent, but a
negative test with Tollens' reagent....
4. Amyloso gives a positive iodine test and a negative test with Fehling's reagent. On the...
4. Amyloso gives a positive iodine test and a negative test with Fehling's reagent. On the basis of the structure of amylose, explain the results of the two tests.
Tollens\' reagent, [Ag(NH3)2] , is used to test for the presence of aldehydes. The reaction results...
Tollens\' reagent, [Ag(NH3)2] , is used to test for the presence
of aldehydes. The reaction results in reduction of the silver ion
to form a mirror of silver metal. Concurrently, the aldehyde is
oxidized. Draw the structure of the organic product resulting from
treatment of 3-methylbutanal with Tollens\' reagent, followed by
treatment with acid.
Tollens' reagent, [Ag(NH3)2] , is used to test for the presence of aldehydes. The reaction results in reduction of the silver ion to form a mirror...
1) What is the functional group that determines if a compound is an aldehyde or a...
1) What is the functional group that determines if a compound is an aldehyde or a ketone? 2) What observation is for a positive iodoform test? 3) what are the observations for a positive Tollens' test?
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
Tollens' reagent, (Ag(NH3)21*, is used to test for the presence of aldehydes. The reaction results in...
Tollens' reagent, (Ag(NH3)21*, is used to test for the presence of aldehydes. The reaction results in reduction of the silver ion to form a mirror of silver metal. Concurrently, the aldehyde is oxidized. Draw the structure of the organic product resulting from treatment of 3-methylbutanal with Tollens' reagent, followed by treatment with acid. 1. Ag(NH,,)* 2.H,0
QUESTION 20 Compound "A" exhibits the following chemical properties: It gives a negative Benedict's reagent test...
QUESTION 20 Compound "A" exhibits the following chemical properties: It gives a negative Benedict's reagent test It forms a yellow precipitate, CHI3, when treated with 12 / OH-(with heating). When compound "A" is treated with LDA/THF (-78°C), a salt is formed that reacts with benzyl bromide to form compound "B" shown below! What is the structure of compound "A"? compound B benzyl bromide 5 OY = oooo = =
When the epoxide 2‑vinyloxirane reacts with lithium dibutylcuprate, followed by protonolysis, compound A is the major product formed. Oxidation of A with PCC yields B, a compound that gives a positive Tollens test and has an intense UV absorption around 2
When the epoxide 2‑vinyloxirane reacts with lithium dibutylcuprate, followed by protonolysis, compound A is the major product formed. Oxidation of A with PCC yields B, a compound that gives a positive Tollens test and has an intense UV absorption around 215 nm. Treatment of B with Ag2O,Ag2O, followed by catalytic hydrogenation, gives octanoic acid. Identify A and B.
20. Predict the structure A-E from the synthetic scheme beto positive/negative? Tollens reagent Cro, MeNH H2SO...
20. Predict the structure A-E from the synthetic scheme beto positive/negative? Tollens reagent Cro, MeNH H2SO A - B cat H 1. MeMgBr 2. H30 H.So, 1. BH; C F E HSO 2. H,O,/OH
Which of the following will test positive with the Tollens' reagent? Benzoic acid Urea Furan-2,5-dione Decanedioic...
Which of the following will test positive with the Tollens' reagent? Benzoic acid Urea Furan-2,5-dione Decanedioic acid 2-Hydroxy-1,2-diphenylethan1-one (E)-1.2-Diphenylethene None of the above 4-Chlorobenzaldehyde 9H-Fluorene 2-Acetoxybenzoic acid Diphenylmethanone trans Cinnamic acid
Test Performed Observations Conclusion for Particular Test: Aldehyde/Ketone/Inconclusive (1 pt) Shiff's reagent (1 pt) Tollen's reagent...
Test Performed Observations Conclusion for Particular Test: Aldehyde/Ketone/Inconclusive (1 pt) Shiff's reagent (1 pt) Tollen's reagent appearance of a dark pink color in solution formation of a silver/grey precipitate formation of a red precipitate fcmation of a bright orange / red precipitate Fehling reagent (1 pt) 2,4-DNP (3 pt) Melting point range of 232 - 235°C 2,4-DNP derivative ID of unknown: pts) 24. Based on the observations / results given in the table below, and by consulting Table 1 on...
4. Amyloso gives a positive iodine test and a negative test with Fehling's reagent. On the basis of the structure of amylose, explain the results of the two tests.
Tollens\' reagent, [Ag(NH3)2] , is used to test for the presence
of aldehydes. The reaction results in reduction of the silver ion
to form a mirror of silver metal. Concurrently, the aldehyde is
oxidized. Draw the structure of the organic product resulting from
treatment of 3-methylbutanal with Tollens\' reagent, followed by
treatment with acid.
Tollens' reagent, [Ag(NH3)2] , is used to test for the presence of aldehydes. The reaction results in reduction of the silver ion to form a mirror...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
Tollens' reagent, (Ag(NH3)21*, is used to test for the presence of aldehydes. The reaction results in reduction of the silver ion to form a mirror of silver metal. Concurrently, the aldehyde is oxidized. Draw the structure of the organic product resulting from treatment of 3-methylbutanal with Tollens' reagent, followed by treatment with acid. 1. Ag(NH,,)* 2.H,0
QUESTION 20 Compound "A" exhibits the following chemical properties: It gives a negative Benedict's reagent test It forms a yellow precipitate, CHI3, when treated with 12 / OH-(with heating). When compound "A" is treated with LDA/THF (-78°C), a salt is formed that reacts with benzyl bromide to form compound "B" shown below! What is the structure of compound "A"? compound B benzyl bromide 5 OY = oooo = =
20. Predict the structure A-E from the synthetic scheme beto positive/negative? Tollens reagent Cro, MeNH H2SO A - B cat H 1. MeMgBr 2. H30 H.So, 1. BH; C F E HSO 2. H,O,/OH
Which of the following will test positive with the Tollens' reagent? Benzoic acid Urea Furan-2,5-dione Decanedioic acid 2-Hydroxy-1,2-diphenylethan1-one (E)-1.2-Diphenylethene None of the above 4-Chlorobenzaldehyde 9H-Fluorene 2-Acetoxybenzoic acid Diphenylmethanone trans Cinnamic acid
Test Performed Observations Conclusion for Particular Test: Aldehyde/Ketone/Inconclusive (1 pt) Shiff's reagent (1 pt) Tollen's reagent appearance of a dark pink color in solution formation of a silver/grey precipitate formation of a red precipitate fcmation of a bright orange / red precipitate Fehling reagent (1 pt) 2,4-DNP (3 pt) Melting point range of 232 - 235°C 2,4-DNP derivative ID of unknown: pts) 24. Based on the observations / results given in the table below, and by consulting Table 1 on...
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