What is the IUPAC name for the compound with the structure CH3-CH2-C≡C-CH3?

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Question: What is the IUPAC name for the compound with the structure CH3-CH2-C≡C-CH3?

Options:

Correct Answer: 2-Pentyne

Solution:

The compound is named 2-pentyne because the triple bond is located between the second and third carbon atoms.

What is the IUPAC name for the compound with the structure CH3-CH2-C≡C-CH3?

What is the IUPAC name for the compound with the structure CH3-CH2-C≡C-CH3?

Step 1: Identify the longest carbon chain in the compound. In this case, the longest chain has 5 carbon atoms.
Step 2: Count the number of carbon atoms in the chain. There are 5 carbon atoms, so the base name is 'pent' (for pentane).
Step 3: Identify the type of bond present. The structure has a triple bond (C≡C), which indicates that it is an alkyne.
Step 4: Since it is an alkyne, we change 'pentane' to 'pentyne'.
Step 5: Determine the position of the triple bond. The triple bond is between the second and third carbon atoms.
Step 6: Indicate the position of the triple bond in the name. Since the triple bond starts at the second carbon, we name it '2-pentyne'.

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