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The decreasing order of boiling points of the following alkanes is:
(a) heptane (b) butane (c) 2-methylbutane (d) 2-methylpropane (e) hexane
Choose the correct answer from the options given below:
Detailed Solution
Boiling point of alkanes increases with molar mass, and straight chain alkanes boil higher than branched isomers. Heptane ($C_7$) > hexane ($C_6$) > 2-methylbutane ($C_5$) > butane ($C_4$) > 2-methylpropane ($C_4$, branched).