Intermolecular
Forces
Forces
What type of intermolecular force is present between nonpolar molecules?
London Dispersion Forces
A measure of the force exerted by a gas above the liquid.
What is vapor pressure?
What direction is favored when heat is added to a system at equilibrium?
endothermic
Only a few hydrogen or hydroxide ions are released in water.
weak acids/bases
Reduction refers to
What is the strongest type of intermolecular force present in water?
Hydrogen Bonding
...describes the only set of conditions at which all 3 phases can exist in equilibrium with one another.
What is triple point?
A type of equilibrium when solids and liquids are part of the chemical reaction.
Heterogenous equilibrium
_____ depends on how much solute dissolves in solution.
What is concentration?
What is the oxidation number of the carbon atom in H₂CO₃?
+4
What happens to the viscosity of a liquid as the strength of intermolecular forces increases?
Viscosity increases.
The _____ in pressure will raise the boiling point and raises the melting point.
What is increase?
What is the equation for K for displacement reaction Zn (s) + 2 AgCl (aq) <--> 2 Ag (s) + ZnCl2(aq)
Kc= [ZnCl2] / [AgCl]2
What are the products?
H2SO4(aq) + KOH(aq) ------->
K2SO4(aq) + H2O(l)
What is the oxidation number of Cr in Al2(Cr2O7)3?
+3
Between CO2 and SO2, which would have stronger intermolecular forces and why?
SO2, because it is polar and exhibits dipole-dipole interactions, whereas CO2 is nonpolar and only has London dispersion forces.
The vapor pressure of a liquid can be determined with this device.
What is a manometer?
CO2 + H2O <---> H2CO3 If we dump in some H2CO3, where will the equilibrium shift to?
shift left
This chemical can be either a weak acid or a weak base depending on the solution.
What is water?
What is the reducing agent in the reaction: Fe₂O₃ + 3CO → 2Fe + 3CO₂?
CO
Why does HF have a higher boiling point than HCl, even though both are polar molecules?
HF has hydrogen bonding, which is stronger than the dipole-dipole interactions in HCl.
What happens at equilibrium...
What is the particles in the system continue to evaporate and condense, but no change happens in the number of particles in the liquid or vapor?
For the reaction X2(g) + 3Y2(g) = 2XY3(g) at equilibrium; what would be the result of increasing the pressure?
shift to the right
This is the result when a weak acid is mixed with a strong base.
What is basic?
Write the half equations: 2Mg(s)+O2(g)->2MgO(s)
2Mg(s)->2Mg2+(s)+4e-
O2(g)+4e- ->2O2-(g)