Question

Draw the structure of the simplest ketone.

Answer 1

Hint: The simplest ketone has three carbon atoms. It contains one carbonyl and two methyl groups. It is prepared by complete oxidation of Iso-propyl alcohol. It is volatile at room temperature. It is commonly used as a nail paint remover.

Complete answer:
In a ketone, two different or same alkyl groups are attached to the carbonyl carbon atom. R indicates alkyl group and Ar indicates Aryl group.

In an aldehyde, hydrogen atom must be present as one group.The following compounds are aldehydes:

ketones are more polar than aldehydes due to the presence of two electron-donating alkyl -groups. The dipole moments that arise from this polarity account for the higher boiling points of ketones as compared to aldehydes.
As in ketones, Carbonyl carbon atom is always attached to two other carbon atoms, the simplest ketone is acetone and it contains three carbon atoms.

Acetone is also known as dimethyl ketone as two methyl groups are attached to carbonyl carbon. ethyl methyl ketone contains four carbon atoms including Carbonyl carbon atom. Common names can be written as first writing names of alkyl groups attached to carbonyl carbon followed by word ketone.

Note:
For dissolving plastics and synthetic fibres Acetone is used as solvent. In the household, acetone is used as paint thinner. . In the production of textiles, varnishes, plastics, paint remover, paraffin wax, etc Methyl ethyl ketone (butanone is used). It is also used as a welding agent for plastics due to its dissolving properties. It is commonly used as a nail paint remover.