Question

what is the name of a hydrocarbon that has the formula ch3(ch2)4cch? 6 - heptyne 1 - heptene 1 - heptyne 6 - heptene

Explanation:

Step1: Analyze the functional - group

The formula has a triple bond ($C\equiv C$), which indicates an alkyne. Alkenes have double bonds ($C = C$).

Step2: Count the carbon - atoms

The total number of carbon atoms in $CH_3(CH_2)_4CCH$ is 7. The parent - chain name for 7 - carbon atoms is hept-.

Step3: Locate the triple - bond

The triple bond is at the first carbon atom when numbering starts from the end closest to the triple bond. So, it is 1 - heptyne.

Answer:

C. 1 - heptyne