Question

which intermolecular force increases with increasing molar mass.
- dipole dipole or dispersion? Thank you!

Answer 1

London dispersion forces are really weak, so I think it's dipole-dipole :) You may want to google it to make sure, though. :3

Answer 2

I think as molar mass increases, the London dispersion forces are greater. There are more electrons that can exhibit induced diple-dipole effect.

Answer 3

Strength of this force depends on the molecule’s polarizability
•
The more polarizable it is, the more easily the electrons are moved around
•
Such as more electrons