The structural relationship between 2-propanol and 1-propanol is an example of what isomerism________________?
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Answer: D. position isomerism
Explanation
Both 1-propanol and 2-propanol share the exact same three-carbon chain and hydroxyl functional group. They differ exclusively in the specific carbon atom position where the hydroxyl group is attached. This structural variation classifies them as classic position isomers within organic chemistry nomenclature. Constitutional isomers share a molecular formula but possess different atomic connectivity patterns. Position isomerism occurs when substituents or functional groups occupy different locations on a carbon skeleton. Nomenclature rules require numbering the carbon chain to clearly distinguish between these isomeric variants.
Different position isomers often exhibit distinct boiling points, melting points, and chemical reactivity profiles. Pharmaceutical chemists must separate position isomers carefully to ensure proper drug efficacy and safety. Industrial synthesis often yields mixtures of position isomers that require purification before commercial use. Option A describes metamerism, which involves different alkyl chains on either side of a heteroatom. Option B is incorrect because both molecules contain the exact same alcohol functional group. Option C refers to stereoisomerism arising from restricted rotation or spatial arrangement differences.
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