homologous series

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Homologous Series

  • Family of organic compounds
  • All groups of similar compounds. Have the same functional group
  • Functional groups defines what they are and how they behave in chemical reactions
  • Called alkanes, alkenes, ketones, esters, alcohols
  • All members have same functional group but diff numbers of carbon atoms in chain
  • No. of carbon atoms in a compound is given by 1st part of its name
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1        meth        

2        eth

3        prop

4        but

5        pent

6        hex

10        dec

  • Series name is given by 2nd part of name (like surname)
  • Alkanes are fully saturated and made of carbon and hydrogen. Their names end in ane e.g. ethane

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