What is our homologous series? Explain with an example
Answers
A series of organic compounds in which hydrogen in a carbon chain is replaced by the same functional group, is called homologous series. Any two adjacent homologues differ by (-CH2) in their molecular formulae.
All the compounds of a homologous series show similar chemical properties.
Example of homologous series: Alkynes.
All the members of homologous series of alkynes have similar structure and similar chemical properties, so they can be grouped together into the homologous series. The general formula of homologous series of alkynes is CnH2n-2. Where, n is the number of carbon atoms in alkyne molecule. The members of alkyne homologous series are:
● Ethyne (C2H2)-First member of alkyne homologous series.
● Propyne (C3H4)-Second member of alkyne homologous series.
● Butyne (C4H6)-Third member of alkyne homologous series.
● Pentyne (C5H8)-Four member of alkyne homologous series.
● Hexyne (C6H10)-Five member of alkyne homologous series.
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●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 CnH2n+2.
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