Intermolecular Forces Flashcards
List IMFs from strongest to weakest
Ion-ion, ion-dipole, dipole-diplole, h-bonds, induced dipole, dispersion forces
Which IMFs are considered van der waals forces?
Dipole-dipole, h-bonds, induced dipole, dispersion forces
How does temperature affect IMFs
Increasing T = decreasing IMFs
How does pressure affect IMFs
Increasing pressure = increasing IMFs
What equation relates vapor pressure and temperature?
ln(P1/P2) = (dH/R)(1/T2 - 1/T1)
What is the triple point on a phase diagram
The point where all three phases coexist (where the lines intersect)
What is the critical point
Top right of the graph, in between gas and liquid
What does it mean if the solid-liquid dividing line on a phase diagram is slanted right
The density of the solid is greater than the liquid
What does it mean if the solid-liquid dividing line on a phase diagram is slanted left
The density of the liquid is greater than the solid
How does size affect dispersion forces
The larger the molecule, the stronger the forces
How does surface area affect dispersion
The greater the surface area, the greater the forces
What are hydrogen bonds
Intermolecular force between hydrogen and a highly electronegative atom (N, O, F)
What is viscosity
Resistance of liquid to flow
What is surface tension
Resistance of liquid to change in surface area
