Question

Decreasing order of various forms of pentane

Answer 1

Answer:

The boiling point of alkanes increases with increase in molecular mass and for the same alkane, the boiling point decreases with branching. Thus, the decreasing order of their boiling points is:

III

n−Pentane

>

II

2−Methylbutane

>

IV

2,2−Dimethylpropane

>

I

n−Butane

Answer 2

Answer:

iso-Pentane is the answer