Question

What is the functional group in acetone?

Answer 1

Functional group

• A functional group is an atom or group of atoms bonded together in a unique fashion which determines the physical and chemical properties of the compounds.
• Examples of the functional groups are aldehyde$\left(-\mathrm{CHO}\right)$, ketone$\left[-\mathrm{C}\left(=\mathrm{O}\right)-\right]$, carboxylic acid$\left(-\mathrm{COOH}\right)$, etc.

IUPAC name of acetone$\left({\mathrm{CH}}_3{\mathrm{COCH}}_3\right)$

Determination of Root Word

Select the continuous chain with the maximum number of carbon atoms

Here the chain is having 3 carbon atoms, hence root word will be “Prop"

2: Determination of names and positions of Locants

There is no substituent in acetone

3: Determination of Suffix

Function group “ketone” is present in acetone, so the suffix will be “one”

So, the IUPAC name of acetone is Propan-2-one.

Functional group in acetone

• The structure of acetone is as follows:-

• So, the functional group in acetone is a ketone.