What is a homologous series of carbon compounds? Give an example and l

1.	What is a homologous series of carbon compounds? Give an example and list its three characteristics.
Answer» Homologous series may be defined as a series of similarly constituted compounds in which the members possess similar chemical characteristics and the two consecutive members differ in their molecular formula by – CH₂ . Eg. Alkane series (CH₄, C₂H₆, C₃H₈, C₄H₁₀) Characteristics of Homologous Series : (i) All the members of a series can be represented by the same general formula. e.g. General formula for alkane series is C_nH_{2n+2 .} (ii) The members in any particular family have almost identical chemical properties. Their physical properties such as melting point, boiling point, density etc, show a regular gradation with the increase in the molecular mass. (iii) The members of a particular series can be prepared almost by the identical methods.

What is a homologous series of carbon compounds? Give an example and list its three characteristics.

Answer»

Homologous series may be defined as a series of similarly constituted compounds in which the members possess similar chemical characteristics and the two consecutive members differ in their molecular formula by – CH₂ .

Eg. Alkane series (CH₄, C₂H₆, C₃H₈, C₄H₁₀)

Characteristics of Homologous Series :

(i) All the members of a series can be represented by the same general formula. e.g. General formula for alkane series is C_nH_{2n+2 .}

(ii) The members in any particular family have almost identical chemical properties. Their physical properties such as melting point, boiling point, density etc, show a regular gradation with the increase in the molecular mass.

(iii) The members of a particular series can be prepared almost by the identical methods.

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