Question

Differentiate BTW Acetal n Hemiacetal​

Answer 1

Answer:

Acetal: Acetal is a group of atoms that is represented by a central carbon atom bonded to two –OR groups, -R group and a –H group.

Hemiacetal: Hemiacetal is a group of atoms composed of a central carbon atom bonded to four groups; an –OR group, -OH group, -R group and a –H group.

Acetal: The general formula of an acetal can be given as RHC(OR’)2.

Hemiacetal: The general formula of a hemiacetal is given as RHC(OH)OR’.

Acetal: Acetal can be formed from the reaction between an aldehyde and an alcohol.

Hemiacetal: Hemiacetal is formed as an intermediate of the reaction between an aldehyde and an alcohol.

Acetal: Acetal is more stable when compared to a hemiacetal.

Hemiacetal: Hemiacetal is less stable when compared to an acetal.

Answer 2

Acetal and hemiacetal are recognized as functional groups. Hemiacetal is an intermediate formed during the formation of acetal. The formation of acetal is known as acetalisation. Here, the reaction between an aldehyde and an alcohol is used for the synthesis of acetal. Partial hydrolysis of acetal can also be used to form a hemiacetal. Acetal is more stable than hemiacetal. Both groups are composed of sp3 hybridized carbon atoms at the center of the group. The main difference between acetal and hemiacetal is that acetals contain two –OR groups whereas hemiacetals contain one –OR and one –OH group.