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CHEM 1120: cp11cp12
What physical properties are affected by the strength of the intermolecular forces? |
surface tension, viscosity, capillary action, and vapor pressure |
What happens to these physical properties as the strength of intermolecular forces increases? |
Increase
melting point
boiling point
viscosity
surface tension
Decrease
vapor pressure |
Strength of intermolecular forces |
Weak
London dispersion
dipole-dipole
Moderate
hydrogen bonding
ion-dipole |
What increases boiling point |
Higher molecular weight and strength of Intermolecular forces |
hydrogen bonding |
F,O, N can hydrogen bond |
Process of vaporization |
Increase with
higher temperature
increase surface area
decreased strength of intermolecular force |
Sublimation |
Change in matter from solid to gas |
deposition |
gas turning into a solid |
Physical Properties of Intermolecular Forces affected... |
Melting/Freezing Point
Boiling Point
Solubility
Viscosity |
molar mass |
mass of 1 mol of the substance numerically equal to the formula mass (atomic mass) but is expressed in g/mol
mole--mass conversion |
Molarity |
mol solute/L soln |
Molality (m) |
= (amt(mol)of a solute) / (mass(kg) of solvent) |
Saturated solutions |
When a solute is dissolved to its max. capacity |
Solute |
What is dissolved in a solution (salt would be the solute in a solution of salt and water) |
mole fraction |
(mol solute)/(mol solute + mole solvent) |