Question

Arrange the three isomers of alkane with molecular formula c5h12 in increasing order of boiling point and write their iupac names.

Answer 1

Answer:

c6h14(Hexane)>c7h16(Heptane)>c8h18(Octane)

as molecules are arranged in increasing order of boiling point as boiling point depends generally upon:

1)number of carbon molecules.

2)branching of given molecules.

I hope it helps...

Explanation:

Answer 2

Surface area is directly proportional to Vander Waals Forces.

Explanation:

• Branching and Boiling point are inversely Proportional.

• With more boiling point, less is the branching and vice versa.

• The surface area of compound increases with length of carbon chain.

Further, Surface area is directly proportional to vander waals forces.

• Thus, vander waals forces increases with the increasing surface area or area of surface of compound.

• 9.5 C, 27.9 C, and 36.1 C are the boiling points in ascending order of the 3 different isomers of pentane ($C_5H_1_2$) and there names are n-pentane, isopentane and neopentane.

*For the structures refer the figure attached.