Draw structural formulas for all the isomers listed in Table 26.3, and show that, indeed, the substances with more compact structures have lower boiling points.

Table 26.3

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TABLE 26.3 Boiling Points of Some Isomeric Alkanes Boiling Point, °C Formula Isomer C4H10 Butane C5H12 Methylpropane Pentane 2-Methylbutane 2,2-Dimethylpropane -0.5 -11.7 36.1 27.9 9.5 Formula C6H14 Isomer Hexane Boiling Point, °C 68.7 3-Methylpentane 63.3 60.3 2-Methylpentane 2,3-Dimethylbutane 58.0 2,2-Dimethylbutane 49.7