Question

How to derive the general formula of a homologous series if two compound of the same homologous series is given?

Answer 1

Alkanes: CñH2ñ+2
Alkenes:CñH2ñ
Alkynes:Cñ2ñ-2

Answer 2

The physical property of any particular member of a homologous series depends on its size, or its position within the homologous series. The physical properties, such as solubility, melting point, boiling point, specific gravity etc. show a gradual change with the increase in their relative molecular masses.