Class 12 Chemistry Alcohols Phenols Ethers Isomerism in alcohols

Isomerism  in alcohols                                                

Isomerism in alcohols: They basically show

  • Position isomerism
  • Chain isomerism
  • Functional isomerism
  • Optical isomerism

Position: In this the position of –OH group changes.

Examples:      

     Class_12_Chemistry_Alcohols_Phenols_&_Ethers_Propanol              

    (2-propanol)          (Propanol)                                                                   

CHAIN ISOMERISM: In this the number of carbon atom in parent chain is going to be different.                

Example

Class_12_Chemistry_Alcohols_Phenols_&_Ethers_Chain_Isomerism

Functional isomerism: they are functional isomer of alcohol & ether   

Example:   CH3CH2CH2OH and CH3CH2O CH3 are functional isomers

                       (Propanol)             (Methoxy ethane)

Optical Isomerism: they also show optical isomerism but there should be a chiral centre

Like: in the given molecule of alcohol

                                 Class_12_Chemistry_Alcohols_Phenols_&_Ethers_Optical_Isomerism                       

                                          (2-butanol)

   (In this there is the chiral centre marked as C* as it has different groups attached to it).

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