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:

Step-by-step solution

With increase in molecular mass, van Der Waal force increases and hence boiling point also increases. BP : Heptane (> ) Hexane (> ) 2- Methyl Butane (> ) Butane (> ) 2- methly propane with the increase in branching, surface area decreases of molecules of same molecular mass which results in decrease in boiling point.