The IUPAC name for -C is ________.
A)3-pentyne
B)2-pentyne
C)pentyne
D)1-methylbutyne
E)2-propene

Question

The IUPAC name for   -C   is ________.
A)3-pentyne 
B)2-pentyne 
C)pentyne 
D)1-methylbutyne 
E)2-propene

Quizplus · Accepted Answer

The compound contains a triple bond between carbon atoms, indicating it is an alkyne. The longest carbon chain is five carbons, making it a pentane. Counting from the end closest to the triple bond, the triple bond is located on the second carbon, giving it the prefix "2-". Therefore, the correct name is 2-pentyne.

The IUPAC Name for -C Is