Identify the decreasing order of boiling poin | vedclass

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Question

(C) The boiling point of alkanes depends on the surface area of the molecule. As the branching in the alkane chain increases,the surface area decrease

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$n$-pentane $>$ Isopentane $>$ Neopentane

Vedclass · Answer

(C) The boiling point of alkanes depends on the surface area of the molecule. As the branching in the alkane chain increases,the surface area decreases,leading to weaker van der Waals forces of attraction. Therefore,the boiling point decreases as branching increases. $n$-pentane is a straight-chain alkane with the largest surface area,followed by Isopentane (one branch),and Neopentane (two branches) has the smallest surface area. Thus,the decreasing order of boiling point is: $n$-pentane $>$ Isopentane $>$ Neopentane.

Identify the decreasing order of boiling point of the following alkanes:
$(i)$ $n$-pentane
$(ii)$ Isopentane
$(iii)$ Neopentane

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Identify the decreasing order of boiling point of the following alkanes:$(i)$ $n$-pentane$(ii)$ Isopentane$(iii)$ Neopentane