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Question
Copy and complete the following table, which relates to the three homologous series of hydrocarbons:
| General formula | CnH2n | CnH2n-2 | CnH2n+2 |
| IUPAC name of the homologus series | |||
| Characteristic bond type | Single bonds | ||
| IUPAC name of the first member of the series | |||
| Type of reaction with chlorine | Addition |
Complete the Table
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Solution
| General formula | CnH2n | CnH2n−2 | CnH2n+2 |
| IUPAC name of the homologous series | Alkene | Alkynes | Alkanes |
| Characteristic bond type | Double bond | Triple bond | Single bond |
| IUPAC name of the first member of the series | Ethene | Ethyne | Methane |
| Type of reaction with chlorine | Addition | Addition | Substitution |
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Homologous series
Complete the following table for homologous series of Alkenes.
| Name | Molecular formula | Condensed structural formula | Number of carbon atom | Number of -CH2- units | Boiling point °C |
| Ethene | C2H4 | CH2 = CH2 | 2 | 0 | -102 |
| Propene | C3H6 | CH3–CH = CH2 | 3 | 1 | -48 |
| 1-Butene | C4H8 | CH3–CH2–CH = CH2 | ______ | ______ | -6.5 |
| 1-Pentene | C5H10 | CH3–CH2–CH2–CH = CH2 | ______ | ______ | 30 |
Define Homologous series.
Name the third homologue of alcohols.
