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What are homologous series of carbon compounds? Mention any two characteristics of homologous series. |
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Answer» A group of organic compounds which can be represented by the same general formula with a same functional group and which show more or less similar trends in their properties is known as homologous series. Example: The homologous series of straight chain alkanes can be represented by the general formula CnH2n+2 Thus the first four members of alkane homologous series are CH4 (methane), CH3−CH3 (Ethane), CH3−CH2−CH3 (propane) and CH3−CH2−CH2−CH3 (butane). Characteristics of a homologous series are: (i) Each member of the series can be represented by a general formula. (ii) All the members of the series can be prepared by the same general methods. (iii) Physical properties changes throughout the series in a regular way. (iv) Members of homologous series have similar chemical properties. |
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