IMF
Dispersive, Dipole, and Hydrogen bonding
What are the three types of intermolecular forces?
The phase of a substance depends on these three things.
What are pressure, temperature, and IMF?
SC, FCC, BCC.
What are the unit cells?
*Note: these are not the only unit cells! Just the ones we need to know!
The number of particles a solute dissociates into.
What is the Van't Hoff factor?
This rate law describes the transformation of a radioactive element into a more stable element.
What is isotopic decay?
This step is known as the slow step. We base the rate equation on this step.
What is the rate determining step?
This is the equation we use to rank melting points of ionic compounds. (If you don't know the name, write it on a whiteboard)
What is Coulomb's law?
F_e=(k_eq^+q^-)/r^2
This is the reason the solid/liquid line for water has a negative slope.
What is hydrogen bonding?
Match the following side length equations to their unit cell:
(4r)/root2(3)
2r
(4r)/root2(2)
BCC, SC, FCC
This concentration doesn't change according to temperature.
What is molality?
This is the units for a first order rate law.
What is
1/(time)
?
This is the energy required to get a reaction started.
What is the activation energy?
Typically, the chemical formulas for these compounds are represented empirically because the structure is huge, with an uncountable number of atoms. They have the highest melting point of the substances we reviewed because of how they bond.
What is network covalent?
Where the one atm line crosses the liquid/gas line represents this about a substance.
What is the boiling point?
The fraction of the crystal lattice structure occupied by atoms.
What is packing efficiency?
These ions are present in the complete ionic but not the net ionic equation.
What are spectator ions?
Half of an unstable substance remains after this amount of time.
What is the half life?
This inorganic or biological species reduces the activation energy but doesn't change the total energy change.
What is a catalyst?
Which of the following are capable of dipole-dipole interactions?
CH4, CO2, H2CO, SF6, NH4+
What is H2CO?
At one atm and 0*C, water is in this state.
What is liquid or solid?
74%
What is the packing efficiency of FCC?
What are the concentrations of ions in a solution prepared by dissolving 2.0 moles of (NH4)2S in sufficient water to make 0.50 L of solution?
(Doesn't need to be in the form of a question)
8.0 M NH4+, 4.0 M S2-
Write the rate expression of the following reaction:
C_6H_12O_6(s) + 6O_2(g)->6CO_2(g)+6H_2O(g)
-[Delta[C_6H_12O_6]]/(Delta t)=-[Delta[O_2]]/(6Deltat)=[Delta[H_2O]]/(6Deltat)=[Delta[CO_2]]/(6Deltat)
A reaction where the energy of the products is less than the energy of the reactants.
What is an exergonic reaction?
Rank the attractive power to water of the following (least to greatest):
Mg2+, Na+, HBr, N2
N2, HBr, Na+, Mg2+
How many steps is required to bring a gas above its boiling point down to its freezing point until its a solid and no further? How many constants should you use? (You might want to draw the graph)
4 steps, 4 constants, one for each step
The number of neighboring atoms around a central atom in a unit cell.
What is the coordination number?
The vapor pressure of a solution is dependent on the temperature and the mole fraction of solute dissolved. At a given temperature, you can take the normal vapor pressure of the solvent and multiply it by the mole fraction of the solute. This is known as Raoult's Law. Know this, is the vapor pressure higher or lower than that of the pure solvent?
The vapor pressure is lower than the pure solvent.
In this rate law for a single reactant reaction, if we double the concentration of the reactant, the rate quadruples.
What is a second order reaction?
This is the change in energy of a reaction.
What is the energy of the products minus the energy of the reactants?