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Aldehyde and Ketones
-Aldehydes and ketones contain a polar carbonyl group that can participate in dipole-dipole interactions.
-These interactions give them higher boiling points than ethers and alkanes of similar mass, but lower boiling points than alcohols of similar mass, since alcohols can hydrogen-bond.
-Furthermore, water can hydrogen-bond with the carbonyl group in aldehydes and ketones, which gives them limited solubility depending on the number of carbon atoms.
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Alcohols and Ethers
-An alcohol is an organic compound with a hydroxyl function group, -OH. Ethanol, CH3CH2OH, is an example.
-An ether is an organic compound with an oxygen atom in the carbon chain. Dimethyl ether, CH3OCH3, is an example.
-The physical properties of a compound, such as boiling point and water solubility, depend on the types of intermolecular forces of attraction, such as hydrogen bonding, that can occur among like molecules or with a solvent.
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List in order of priority, least to greatest:
a. Ketone, Aldehyde, Amine, Alcohol, Carboxylic Acid
b. Aldehyde, Amine, Ketone, Carboxylic Acid, Alcohol
c. Amine, Alcohol, Ketone, Aldehyde, Carboxylic Acid
d. Amine, Alcohol, Carboxylic Acid, Ketone, Aldehyde
Low priority < < < < High priority
c. Amine, Alcohol, Ketone, Aldehyde, Carboxylic Acid
In general, increasing priority follows the increase in oxidation.
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