Intermolecular Forces + Colligative Properties Flashcards
(18 cards)
What are the Intermolecular Forces from weakest to strongest?
London dispersion
Dipole-dipole
Hydrogen-bonding
Ionic
What are the characteristics of London dispersion forces?
Nonpolar
Occurs in all compounds/elements
Can only contain C & H
What are the characteristics of Dipole-dipole interactions?
Polar
Higher boiling/melting points
What are the characteristics of hydrogen-bonding?
H - N, O, F
Polar
What are miscible substances
They mix well because they have similar intermolecular forces
What are immiscible substances
They do not mix well because they have different intermolecular forces (nonpolar & polar)
The smaller the concentration, the higher the osmotic pressure. True or false?
True!
A salt solution sits in an open beaker. Assuming constant temperature and pressure, the vapor pressure of the
solution increases, decreases, or remains the same?
Decreases over time
When a non-volatile solute is added to a solvent, does it or does not contribute to the vapor pressure
Does not
What is a volatile solute?
Is easily vaporized
What is a non-volatile solute?
Does not get easily vaporized
If you have a solution of chloroform and benzene, both are volatile or non-volatile?
Volatile
If you have a solution of salt dissolved in water, the salt is a volatile or non-volatile?
Non-volatile solute
Does higher osmotic pressure lead to a higher or lower boiling point
A higher boiling point
What is a supersaturated solution
A solution with a lot of solid that remains at the bottom of the solution
What is a saturated solution
A solution with some solid that remains at the bottom of the solution
What is a unsaturated solution
A solution with no remains at the bottom of the solution
When salts are dissolved in water, the boiling point of water goes up because
There are favorable
solute-solvent interactions
