Question

In: Chemistry

Calssification and Identification of Aldehydes and Ketones 1.Give a valid structure of a compound that contains...

Calssification and Identification of Aldehydes and Ketones

1.Give a valid structure of a compound that contains the following functional groups:

a. an aldehyde

b. an aromatic aldehyde

c.a ketone

d.a methyl ketone

2. Why can you not distinguish between an aldehyde and a ketone using only the 2,4-dinitrophenylhydrazine reagent?

3. What do you expect to see for a positive Tollens' test? Which class of carbonyl compound gives a positive test result?

4. When would formation of a derivative be a necessary step in this experiment?

Solutions

Expert Solution

queen_honey_blossom answered 2 years ago
Next > < Previous

Related Solutions

1. Give the mechanism for nucleophilic addition reactions to aldehydes and ketones, list factors that affect...
1. Give the mechanism for nucleophilic addition reactions to aldehydes and ketones, list factors that affect this reaction. 2. Give the mechanism for the Wittig reaction. 3. Discuss nucleophilic acyl substitution reactions and provide key examples to make your point. 4. List the major nomenclature rules for acid chlorides, anhydrides, carboxylic acids, esters, amides and nitriles.
1. Give the mechanism for nucleophilic addition reactions to aldehydes and ketones, list factors that affect...
1. Give the mechanism for nucleophilic addition reactions to aldehydes and ketones, list factors that affect this reaction. 2. Give the mechanism for the Wittig reaction. 3. Discuss nucleophilic acyl substitution reactions and provide key examples to make your point. 4. List the major nomenclature rules for acid chlorides, anhydrides, carboxylic acids, esters, amides and nitriles.
Functional Group Identification: What are the functional groups (alkanes, alkenes, alcohols, aldehydes, ketones, phenol)? how is...
Functional Group Identification: What are the functional groups (alkanes, alkenes, alcohols, aldehydes, ketones, phenol)? how is reaction with Br2: (and how this can be used to test for alkanes, alkenes with and without light) Explain Ceric nitrate test (tests for alcohol functional group): turns red in presence of hydroxyl, turns green-brown in presence of phenol. FeCl3 test: phenols turn red-purple 2,4-DNP (tests for aldehydes and ketones): yellow-red = carbonyl present, but it does not help you decide between the aldehyde...
The rate of the reaction of NH2OH with aldehydes and ketones is very sensitive to pH.
The rate of the reaction of NH2OH with aldehydes and ketones is very sensitive to pH. It is very low in solutions more acidic than pH 2 or more basic than pH 7. It is highest in moderately acidic solution (pH ∼ 4). Suggest explanations for these observations.    
Why are aldehydes usually more reactive than ketones? Why are ketones more reactive than esters, and...
Why are aldehydes usually more reactive than ketones? Why are ketones more reactive than esters, and ester more reactive than amides? Please help explain with the help of steric, indcutive and resonance effects. Show an example for each class of compounds please. Thank you!
A. While both NaBH4 and LiAlH4 can both be used to reduce ketones and aldehydes, the...
A. While both NaBH4 and LiAlH4 can both be used to reduce ketones and aldehydes, the procedure that you followed in lab would not result in the fluorenol product if NaBH4 were simply replaced with LiAlH4. i) Explain why. ii) What change to the procedure would have to be made to use LiAlH4 tosuccessfully reduce fluorenone to fluorenol? B. NaBH4 is not capable of reducing esters since estersare less reactive than ketones. Explain structurally why this is the case. C....
Based on the data table below, identify a general trend in reaction speed for ketones/aldehydes and...
Based on the data table below, identify a general trend in reaction speed for ketones/aldehydes and provide an explanation for these trends. Ketone MM (g/mol) Aldehyde MM (g/mol) Rxn time (min) Product (g) Theoretical Yield acetone 58.1 benzaldehyde 106.1 1.75 0.742 0.5406 137% cyclopentanone 84.1 benzaldehyde 106.1 0 0.557 0.5926 94% cyclopentanone 84.1 benzaldehyde 106.1 0 0.724 0.5926 122% acetone 58.1 cinnamaldehyde 132.2 4 0.432 0.645 67% cyclopentanone 84.1 4-methylbenzaldehyde 120.2 0 0.637 0.649 98% acetone 58.1 4-methoxybenzaldehyde 136.2 18...
6. Provide a reaction to identify aldehydes and ketones, followed by at least two important reactions...
6. Provide a reaction to identify aldehydes and ketones, followed by at least two important reactions to differentiate aldehydes and ketones with examples and explain their reaction mechanism
Post-lab Question #1: While both NaBH4 and LiAlH4 can both be used toreduce ketones and aldehydes,...
Post-lab Question #1: While both NaBH4 and LiAlH4 can both be used toreduce ketones and aldehydes, the procedure that you followed in lab wouldnot result in the fluorenol product if NaBH4 were simply replaced with LiAlH4. a) Explain why. b) What change to the procedure would have to be made to use LiAlH4 tosuccessfully reduce fluorenone to fluorenol? Post-lab Question #2: NaBH4 is not capable of reducing esters since estersare less reactive than ketones. Explain structurally why this is the...
1. A pigment solution contains compound A with 4 polar groups and compound B with 2...
1. A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compounds using paper chromatography with a nonpolar solvent. Predict the location of the two bands relative to the solvent front. Explain your answer. 2. Paper chromatography is used to separate pigments extracted in acetone from fresh spinach. Explain how differences in polarity are used to separate the pigments in this chromatography experiment.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT