WorksheetsAldehydes,Ketones and Carboxylic acids
Total questions: 21
Worksheet time: 14mins
Which is a test for a C=O?
Bromine water
Fehling's solution
Acidified potassium dichromate (VI)
2,4-DNPH (Brady's reagent)
Which of the following tests would give a positive result for propan-1-ol?
The iodoform test (NaOH + I2)
Tollen's reagent (silver mirror test)
PCl5 (phosphorus pentachloride)
2,4-DNPH (Brady's reagent)
Name this molecule:
Propanone
Propanal
Butanone
Butanal
Name this molecule and give its functional group.
Carboxylic acid - propanoic acid
Ester - methyl ethanoate
Ester - ethyl methanoate
Carboxylic acid - methyl ethanoic acid
What will be formed if butanone is reacted with LiAlH4 in dry ether?
Butanoic acid
Butan-1-ol
Butan-2-ol
Butanal
What is the name of the mechanism when KCN (in acidic conditions) reacts with propanal?
Free radical substitution
Nucleophilic substitution
Nucleophilic addition
Electrophilic addition
Name this molecule:
Pentanoic acid
2-hydroxy-2-methylbutan3-one
3-hydroxy-3-methylbutane-2-one
2-oxo-3-methylbutan-3-ol
Which of the following reagents will oxidise propan-1-ol to propanal (tick all that apply)?
Acidified potassium dichromate (VI)
2,4-DNPH (Brady's reagent)
Fehling's solution
PCl5 (phosphorus pentachloride)
2. Fehling's test: No observable change
3. 2,4-DNPH: yellow ppt
Which compound will have the above observations?
What is the difference between aldehyde and ketones?
position of C=O group
position of C atoms
the number of bonds carbon can form
the number of oxygen atoms
If propanal reacts with KCN in acidic conditions, which of the following is true?
The product is not chiral
A racemic mixture of the R and S enantiomers is formed
Only the R enantiomer forms
Only the S enantiomer forms
Which of the following is the most acidic?
CH3CH2OH
(CF3)2CHOH
Which of the following is the most acidic?
What will be formed if butanone is reacted with LiAlH4 in dry ether?
Butanoic acid
Butan-1-ol
Butan-2-ol
Butanal
Which of the following species can attack the carbon atom in the carbonyl group, C=O?
Br2
Cl
CN-
NO2+
