Question 6:

What is a homologous series? Explain with an example.

Answer:

A homologous series is a series of carbon compounds that have different numbers of

carbon atoms but contain the same functional group.

For example, methane, ethane, propane, butane, etc. are all part of the alkane

homologous series. The general formula of this series is C_nH_2n+2.

Methane CH₄

Ethane CH₃CH₃

Propane CH₃CH₂CH₃

Butane CH₃CH₂CH₂CH₃

It can be noticed that there is a difference of −CH₂ unit between each successive

compound. 

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