Alcohol And It’s Types
By Anup Pokhrel
Alcohols are hydroxyl derivative of alkanes containing –OH as a functional group. These compounds are obtained from alkanes replacing hydrogen atom by a hydroxyl group.
In homologous series, alcohols are represented by molecular formula CnH2n+2.
Example of alcohol are as follows.
Classification of alcohols.
Alcohols are classified on the basis of
- On the basis of number of –OH group:-
- On the basis of nature of C-atoms containing –OH group.
1. On the basis of number of –OH group: On the basis , alcohols are classified as
- Monohydric alcohol.
- Dihydric alcohol.
- Trihydric alcohol
- Polyhydric alcohol.
An alcohol heaving only one -OH group are called monohydric alcohol.
An alcohol containing two -OH group is called dihydric alcohol.
An alcohol containing 3-OH group are called Trihydric alcohol.
2. On the basis of nature of C-atom containing monohydric alcohol are classified into three types.
- Primary alcohol.
- Secondary alcohol.
- tertiary alcohol.
Primary alcohol. 10.
If carbon containing -OH group is bonded to non or one carbon atom,it is called primary alcohol or called 10.
Secondary alcohol. 20
If the carbon containing -OH group is bonded with two C-atom it is called secondary alcohols.
If the carbon containing -OH group is bonded to two C atoms it is called tertiary alcohol.
Write a structural formula of secondary alcohol of C3H8O and give a method of its preparation using Grignard reagent.