Aromatics

Question 1

What are aromatics

Answer 1

Aromatics are benzene rings which are basically 6 carbons that have 3 double bonds

Question 2

How to name aromatics

Answer 2

When benzene is a parent molecule name the substituent group as mentioned in alkanes, etc.

Ex: 1,2 dichloro benzene

For 2 substituent groups the following prefixes can be used

Ortho: first and second carbon

Meta: first and third carbon

Para: first and fourth carbon

If benzene is the substituent meaning there is a complex chain such as double bond it would be called phenyl.

Ex: 4-phenyl-methene

Question 3

Reactions of aromatics

Answer 3

Although benzene is unsaturated can’t undergo additional reaction because it’s 3 double bonds make it more stable. Thus it’s carbons making the double bonds can’t be replaced. Therefore, it undergoes substitutional reaction.

Question 4

What are the properties of aromatic hydrocarbons

Answer 4

1. Most at room temperature are liquid while others are crystalline solids
2. Symmetrical structure so it’s very stable
3. Non-polar, hence insoluble in water
4. Less reactive than alkanes, alkenes and alkynes