I want to confirm some things on solubility and boiling points(they might be right or wrong):

Question

- If a substance is soluble in water then it also has a high boiling point

- If a substance has a high intermolecular force then it also has a high boiling point

- Shorter carbohydrate chains are more soluble in water than long carbohydrate chains

- Chains with more shielding (more side chains) has a lower solubility in water

- Every molecule has london-dispersion force

I would also like to know the difference between Vann Der Waals Forces and intermolecular forces

Answer 1

- If a substance is soluble in water then it also has a high boiling point
High is a relative word; I don't know how to answer this.

- If a substance has a high intermolecular force then it also has a high boiling point
Same point here

- Shorter carbohydrate chains are more soluble in water than long carbohydrate chains
This is true

- Chains with more shielding (more side chains) has a lower solubility in water
true

- Every molecule has london-dispersion force
true

I would also like to know the difference between Vann Der Waals Forces and intermolecular forces
Here is a site to read.
" target="_blank">http://en.wikipedia.org/wiki/Intermolecular_force#Van_der_Waals_forces