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Name the compound CH3-CH2-CH2-OH using IUPAC nomenclature.

Chemistry

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Answer

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Step-by-step solution

4 steps

To name the compound CH3−CH2−CH2−OHCH_3-CH_2-CH_2-OH, we follow the IUPAC nomenclature rules for organic compounds.

  1. Identify the functional group.

    The compound contains an -OH group, which is characteristic of an alcohol.

  2. Determine the longest carbon chain containing the functional group.

    There are three carbon atoms in the chain: CH3−CH2−CH2−CH_3-CH_2-CH_2-. The parent alkane with three carbon atoms is propane.

  3. Number the carbon chain to give the functional group the lowest possible number.

    Starting from the right, the -OH group is attached to the first carbon atom:

    CH33−CH22−CH21−OH\overset{3}{CH_3}-\overset{2}{CH_2}-\overset{1}{CH_2}-OH

    So, the hydroxyl group is at position 1.

  4. Name the compound.

    For alcohols, the '-e' ending of the parent alkane is replaced with '-ol', and the position of the hydroxyl group is indicated by a number.
    Thus, propane becomes propanol, and with the -OH group at position 1, the name is 1-propanol.

    Comparing this with the given options:
    A. 1-propanol
    B. 2-propanol (This would be CH3−CH(OH)−CH3CH_3-CH(OH)-CH_3)
    C. Propanal (This would be an aldehyde, CH3−CH2−CHOCH_3-CH_2-CHO)
    D. Propanoic acid (This would be a carboxylic acid, CH3−CH2−COOHCH_3-CH_2-COOH)

    The correct option is A.

    The name of the compound is A. 1-propanol\boxed{\text{A. 1-propanol}}.

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