Question

Boiling point of higher alkanes are greater than lower alkanes beacuse (a) Higher Alkanes Have Zig Zag Structure
(B) The poralizibility of higher alkanes Are Greater

Answer 1

Answer:

An alkane is a series of saturated hydrocarbons.

Alkanes have the general fomula of Cn H2n+n

The boiling point of higher alkanes is greater than that of lower alkanes because higher alkanes have a zigzag structure.

This zigzag structure helps to expose the higher akanes to a bigger surface area are in contact with each other,thus a greater Van Der Walls forces between the molecules thus increasing the boiling point.

Explanation:

Answer 2

Hey Dear,

● Answer -

(B) The polarizability of higher alkanes are greater

● Explanation -

• Boiling point increases with increase in molecular mass of the organic compound.
• As molecular mass increases, polarizability increases which results in strong van-der Wall forces.
• Hence, boiling point of higher alkanes is greater than lower alkanes.

* It should be noted here that, boiling point decreases with increase in branching.

Hope this helped you.