Question

Characteristics of homologous series

Answer 1

Answer:1. It can be represented by the same general formula.

2. It have the same functional group.

3. The successive members differ in their molecular formula by --CH2-- group, they differ in molecular weight by 14 units.

4. It can be prepared by similar chemical methods.

5. They show similar chemical properties.

6. They show graduation in physical properties such as melting point, boiling point, density or solubility.

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Explanation:

Answer 2

_________Answer ______

HOMOLOGOUS SERIES:−

➡A series of organic compounds in which the same functional group substitute for hydrogen in a carbon Chain is called homologous series.

➡CHARACTERISTICS OF HOMOLOGOUS SERIES :-

• All the members of homologous series have same functional group.

• All the members of homologous series have same general formula.

• The change in properties of homologous series is because of Change in size of a alkyle group.

• Each successive member in homologous series differ by molecular formula ( CH2).

• Any two successive member differ by molecular mass 14u.

• Physical properties like melting point, boiling point, solubility in particular solvent also show gradation in homologous series . These are determine by Carbon Chain end.

• Chemical properties are determine by functional group.

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