Homework Answers
Tollens test can distinguish aldehyde and ketone. Tollens reagent react with only aldehyde.
Chromate also distinguish between aldehyde and ketone.
Ketone : No change in the orange colour
ALdehyde : Orange solution turns green
IR spectroscopy also can distinguish between them.
Answer is Solubility in water or alkaline water
Both are soluble in water can not distinguish between aldehyde and ketone
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Question 3 (1 point) Which of the following can not be used to distinguish the identity of the compound between ald...
Question 3 (1 point) Which of the following can not be used to distinguish the identity...
Question 3 (1 point) Which of the following can not be used to distinguish the identity of the compound between aldehyde and ketone? Solubility in water or alkaline water OIR Chromate oxidation Tollen's test
Question 3 (1 point) Which functional group is found in this molecule? Alcohol Aldehyde Ketone Carboxylic...
Question 3 (1 point) Which functional group is found in this molecule? Alcohol Aldehyde Ketone Carboxylic Acid Question 4 (1 point) Which functional group is found in this molecule? LCHE HE-CH2-CH-CH3 H.COM Alcohol Aldehyde Ketone Carboxylic Acid Question 5 (1 point) Which functional group is found in this molecule? CH2-CH3 Alcohol Aldehyde Ketone Carboxylic Acid Question 6 (1 point) Which functional group is found in this molecule? CH,CH,CCHCH2CH.CH CH Alcohol Aldehyde Ketone Carboxylic Acid Question 7 (1 point) Which functional...
Suppose you have obtained the following observation for an unknown compound A. Observation 1: The unknown...
Suppose you have obtained the following observation for an unknown compound A. Observation 1: The unknown A was insoluble in water, and insoluble after adding NaOH Observation 2: The acidic chromate test resulted in green color Observation 3: No mirror formation with Tollens' test Which of the following is the possibility for unknown A? low molar-mass 1° or 2° alcohol high molar-mass 1° or 2° alcohol low molar-mass aldehyde high molar-mass ketone high molar-mass carboxylic acid high molar-mass aldehyde
What reagent would you use to distinguish between the following pairs of compounds? Indicate what...
Organic Chemistry
What reagent would you use to distinguish between the following pairs of compounds? Indicate what you would observe. 1) Primary and secondary alcohol (2) Aldehyde and ketone (3) A ketone and methylketone (4) A ketone and alcohol
What reagent would you use to distinguish between the following pairs of compounds? Indicate what you would observe. 1) Primary and secondary alcohol (2) Aldehyde and ketone (3) A ketone and methylketone (4) A ketone and alcohol
Please answer question 5 Unknown is acetone, as you can see in the chart above the...
Please answer question 5
Unknown is acetone, as you can see in the chart above the
question
Aldehydes and Ketones Report Sheet E. Identification of an Unknown Substance Summary of Testing Results Conclusion smelis like Odor acetone nait polish soluble methyl Ketone Is it a methyl ket Does it have a familiar odor? moveY Solubility in water How many carbon atoms? 2 one? Iodoform test Oresen Hes Is it an aldehyde? no, Ketone Benedicte test- Tollen's tions and Problems Q.5...
Question 2 (1 point) Using 1H NMR spectroscopy, how can you tell the difference between an...
Question 2 (1 point) Using 1H NMR spectroscopy, how can you tell the difference between an aldehyde and a ketone? An aldehyde has a C-H stretch (one or two) between 2700-2830 cm1 An aldehyde has a proton signal between 9-10 ppm A ketone has signals around 2-3 ppm. A ketone has a signal around 200 ppm.
Question 4 Which of the following could be used to distinguish between 1-octyne and 2-octyne? a...
Question 4 Which of the following could be used to distinguish between 1-octyne and 2-octyne? a treatment with two moles of HX Raddition of water reaction with cold KMnO4 O decolorization of bromine in CC14 O O treatment with Ag(NH3)2OH
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...
1. True and False Question (0.5 point per question) a) Carbonyl compounds have higher boiling points...
1. True and False Question (0.5 point per question) a) Carbonyl compounds have higher boiling points than hydrocarbons, but lower boiling points than corresponding alcohols. b) Aldehydes and ketones react with primary amines to form imines and with secondary amines to form enamines. c) Aldehydes and ketones can be oxidized to carboxylic acids. d) Diols can form acetal with the ketone or aldehyde to protect them for selective reduction of the ester. e) The electron-withdrawing group in Wittig reagent does...
Question 10 (1 point) Which region in the IR spectrum could be used to distinguish between...
Question 10 (1 point) Which region in the IR spectrum could be used to distinguish between naproxen and diphenhydramine (Benadryl)? a) 3000-3050 cm O b ) 1360-1380 cm c) 3100-3500 cm d) 2400-3500 cm Page 10 of 50
Question 3 (1 point) Which of the following can not be used to distinguish the identity of the compound between aldehyde and ketone? Solubility in water or alkaline water OIR Chromate oxidation Tollen's test
Question 3 (1 point) Which functional group is found in this molecule? Alcohol Aldehyde Ketone Carboxylic Acid Question 4 (1 point) Which functional group is found in this molecule? LCHE HE-CH2-CH-CH3 H.COM Alcohol Aldehyde Ketone Carboxylic Acid Question 5 (1 point) Which functional group is found in this molecule? CH2-CH3 Alcohol Aldehyde Ketone Carboxylic Acid Question 6 (1 point) Which functional group is found in this molecule? CH,CH,CCHCH2CH.CH CH Alcohol Aldehyde Ketone Carboxylic Acid Question 7 (1 point) Which functional...
Suppose you have obtained the following observation for an unknown compound A. Observation 1: The unknown A was insoluble in water, and insoluble after adding NaOH Observation 2: The acidic chromate test resulted in green color Observation 3: No mirror formation with Tollens' test Which of the following is the possibility for unknown A? low molar-mass 1° or 2° alcohol high molar-mass 1° or 2° alcohol low molar-mass aldehyde high molar-mass ketone high molar-mass carboxylic acid high molar-mass aldehyde
Organic Chemistry
What reagent would you use to distinguish between the following pairs of compounds? Indicate what you would observe. 1) Primary and secondary alcohol (2) Aldehyde and ketone (3) A ketone and methylketone (4) A ketone and alcohol
What reagent would you use to distinguish between the following pairs of compounds? Indicate what you would observe. 1) Primary and secondary alcohol (2) Aldehyde and ketone (3) A ketone and methylketone (4) A ketone and alcohol
Please answer question 5
Unknown is acetone, as you can see in the chart above the
question
Aldehydes and Ketones Report Sheet E. Identification of an Unknown Substance Summary of Testing Results Conclusion smelis like Odor acetone nait polish soluble methyl Ketone Is it a methyl ket Does it have a familiar odor? moveY Solubility in water How many carbon atoms? 2 one? Iodoform test Oresen Hes Is it an aldehyde? no, Ketone Benedicte test- Tollen's tions and Problems Q.5...
Question 2 (1 point) Using 1H NMR spectroscopy, how can you tell the difference between an aldehyde and a ketone? An aldehyde has a C-H stretch (one or two) between 2700-2830 cm1 An aldehyde has a proton signal between 9-10 ppm A ketone has signals around 2-3 ppm. A ketone has a signal around 200 ppm.
Question 4 Which of the following could be used to distinguish between 1-octyne and 2-octyne? a treatment with two moles of HX Raddition of water reaction with cold KMnO4 O decolorization of bromine in CC14 O O treatment with Ag(NH3)2OH
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...
Question 10 (1 point) Which region in the IR spectrum could be used to distinguish between naproxen and diphenhydramine (Benadryl)? a) 3000-3050 cm O b ) 1360-1380 cm c) 3100-3500 cm d) 2400-3500 cm Page 10 of 50
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