Question

question 29 of 30 what is the name of the molecule below? h₃c−c≡c−ch₃ a. 2-ethyne b. 1-ethyne c. 2-butyne d. 1-butyne

Explanation:

Step1: Determine the carbon chain length

The molecule has 4 carbon atoms (from \( \text{H}_3\text{C} - \text{C} \equiv \text{C} - \text{CH}_3 \)), so the parent chain is butane - derived (alkyne, so butyne).

Step2: Locate the triple bond

The triple bond is between the 2nd and 3rd carbon atoms (since numbering from either end gives the triple bond at position 2). So the name is 2 - butyne.

Answer:

C. 2-butyne