Which general formula represents the homologous series of hydrocarbons that includes the compound l-heptyne?
CnH2n-6 B) CnH2n C) CnH2n-2 D) CnH2n+2 Correct Answer: Option C – CnH2n-2 A homologous series is a series of organic compounds with a similar general formula, possessing similar chemical properties due to the presence of the same functional group, and shows a gradation in physical properties as a result of increase in molecular size and mass. For example, ethane has a higher boiling point than methane since it has more Van der Waals forces (intermolecular forces) with neighboring molecules. This is due to the increase in the number of atoms making up the molecule. Organic compounds in the same homologous series vary by a CH2. Even while the general formulae are the same, they have different structures that can lead the exact same compound to different properties, although they will always present the same chemical properties while as a homologous compound. Compounds in each set have the same little group of atoms called the functional group. Most chemical properties of organic compound
