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Both aldehydes and ketones contain carbonyl groups: In aldehydes, the carbonyl c

ID: 945996 • Letter: B

Question

Both aldehydes and ketones contain carbonyl groups: In aldehydes, the carbonyl carbon atom is bonded to a hydrogen atom, whereas in ketones the carbonyl carbon atom is bonded to another carbon atom. Determine which of the following statements are true. Select (check) the correct statements. Ketones are polar molecules. Butanal has a higher boiling point than 2-butanol. Propanal is a gas at room temperature, whereas formaldehyde (methanal) is a liquid at room temperature. Ketones have lower boiling points than alcohols of similar size. Ketones with fewer than five carbon atoms are soluble in organic solvents, but not in water. Both aldehydes and ketones can hydrogen bond with water molecules.

Explanation / Answer

true statements:

ketones have lower boiling points than alcohols

both aldehydes and ketones can hydrogen bond with water