Question

what are the factors on which boiling point and melting point depends​

Answer 1

Answer:

There are 3 important trends to consider.

The relative strength of the four intermolecular forces is: Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces. The influence of each of these attractive forces will depend on the functional groups present.

Boiling points increase as the number of carbons is increased.

Branching decreases boiling point

Answer 2

Answer:

1.Pressure: when the external pressure is:

less than one atmosphere, the boiling point of the liquid is lower than its normal boiling point.

equal to one atmosphere, the boiling point of a liquid is called the normal boiling point.

greater than one atmosphere, the boiling point of the liquid is greater than its normal boiling point.

2.Types of Molecules: the types of molecules that make up a liquid determine its boiling point. If the intermolecular forces between molecules are:

relatively strong, the boiling point will be relatively high.

relatively weak, the boiling point will be relatively low.