To name the given alkenes, follow the IUPAC rules by identifying the longest carbon chain containing the double bond, naming the parent chain, indicating the position of the double bond if necessary, and naming any substituent groups.
The alkenes are a class of hydrocarbons that contain carbon-carbon double bonds. To name each of the following alkenes, we will follow the rules provided by the International Union of Pure and Applied Chemistry (IUPAC):
Identify the longest chain of carbon atoms containing the double bond.
Name the parent chain by using the same stem as the alkane with the same number of carbon atoms but ending in -ene.
If there are four or more carbon atoms in the chain, indicate the position of the double bond.
Name any substituent groups as with alkanes, indicating their position with a number.
Using these rules, we can name the alkenes:
C4H8 - Butene
C5H10 - Pentene
C8H16 - Octene