Hexane () is a straight-chain alkane. Including both linear and branched frameworks, what is the abs — Isomerism and Stereochemistry Chemistry Question
Question
Hexane ($C_6H_{14}$) is a straight-chain alkane. Including both linear and branched frameworks, what is the absolute total number of structural isomers possible for the formula $C_6H_{14}$?
Answer: C
💡 Solution & Explanation
The molecular formula $C_6H_{14}$ corresponds to a fully saturated acyclic alkane ($DU=0$). Systematically drawing the possible carbon skeletons yields: n-hexane (straight), 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane. This rigorously totals exactly 5 structural isomers.
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