Question

What is the correct name of the following organic compound?

A. 2-methyl-4-ethylpentane
B. 2,4-dimethylhexane
C. octane
D. 2,4-dimethyloctane
E. 2-ethyl-4-methylpentane

Answer 1

B. 2,4-dimethylhexane. The correct name for the given organic compound is 2,5-dimethylhexane, based on the IUPAC naming system for carbon chain with two methyl substituents on the second and fifth carbons of the hexane parent chain.

Step-by-step explanation:

The correct name of the given organic compound is 2,5-dimethylhexane. The longest carbon chain (LCC) has 6 carbon atoms, making it a hexane. The two methyl groups are attached to the 2nd and 5th carbon atoms, so their positions in the name are indicated by the numbers 2 and 5. Therefore, the correct name is 2,5-dimethylhexane.

The correct name for the organic compound in question is 2,5-dimethylhexane. To determine the correct name, one would follow these steps:

1. Identify the longest carbon chain (LCC), which in this case has six carbon atoms, so the parent compound is hexane.
2. Number the carbons in the LCC in a way that gives the substituents the lowest possible numbers. For this compound, numbering can be from left to right or right to left, as the resulting numbering will be the same.
3. Identify the substituents, which are two methyl groups attached to the second and fifth carbon atoms.
4. Combine the information to get the name 2,5-dimethylhexane, indicating the positions and types of the substituents in the parent chain.