Answer:
The general formula for the alkanes is CnH2n+2. A homologous series is a set of compounds with the same general formula, similar chemical properties and gradual changing physical properties. Alkanes, alkenes and cycloalkanes are each an example of a homologous series.
Using this formula, we can write a molecular formula for any alkane with a given number of carbon atoms. For example, an alkane with eight carbon atoms has the molecular formula C8H(2 × 8) + 2 = C8H18.
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12.3: Structures and Names of Alkanes.
Name ethane
Molecular Formula (CnH2n + 2) C2H6
Condensed Structural Formula CH3CH3
Number of Possible Isomers —
