Question

Question #25ef1

Answer 1

This is 2-pentanone.

Explanation:

IUPAC name for ketones have the suffix -one.
The name also shows where is the carbonyl group.

For example, acetone(`CH_3COCH_3`) has the IUPAC name 2-propanone.

`CH_3CH_2CH_3` propan`color(red)"e"`
`CH_3COCH_3` `color(blue)"2-"`propan`color(red)"one"`

Similarly, `CH_3CH_2CH_2COCH_3` is named after the corresponding alkane `CH_3CH_2CH_2CH_2CH_3` = pentane.

The name of this ketone is 2-propanone.
Here is the answer.
http://www.ivyroses.com/Chemistry/Organic/Naming-Ketones.php