CBSE Class 10 Science Question 6 of 28

Carbon and its Compounds — Question 6

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Question 6

What is a homologous series? Explain with an example.

Answer

A homologous series is a group of organic compounds having a similar structure and similar chemical properties in which the successive compounds differ by a CH2 group.

For example,

  • Ethene [C3H6], Butene [C4H8], Propene [C5H10] etc., are part of the alkene homologous series.

  • They differ by a -CH2- unit.

  • The general formula of this series is CnH2n where n = 2, 3, 4 etc.