4.1
One factor that determines whether a reaction occurs or not
What is proper orientation?
What is enough energy to overcome activation energy (barrier)?
2A + 3B --> 2C + 2D
The expression for the rate of appearance of C.
ΔC/Δt
Rate = k[A]2[B]0
The order of reactant A.
What is 2?
N2O2 + H2 --> N2O + H2O
The molecularity of this elementary step.
What is bimolecular?
The letter used to denote the equilibrium constant expression.
What is K (Keq)?
What is increased surface area?
0.500 M of N2 disappears over the course of 7.0 seconds.
The rate of consumption of N2.
What is 0.071 M/s?
Rate = k[B]2[C]
How the rate changes when B is tripled.
What is the rate changes by 9 (gets faster by 9x)?
The rate-determining step that determines the rate law.
What is the slow step?
A snapshot of a reaction that may or may not be at equilibrium.
What is the reaction quotient (Q)?
The role of a catalyst.
What is lowering the activation energy?
4PH3 --> P4 + 6H2
0.250 moles of PH3 are consumed in a 3.0 L vessel for every 10 seconds of a reaction.
The rate of disappearance of appearance of H2.
What is 0.0125 M/s?
Rate = k[LiNO3][HCl]
The units of the rate constant, k.
What is M-1s-1?
A species that does not appear in the overall (net) reaction.
What is a catalyst?
What is an intermediate?
Ca(OH)2 <--> Ca2+ (aq) + 2OH- (aq)
The equilibrium constant for the reaction above.
What is Keq = [Ca2+][OH-]2?
One factor that speeds up a reaction.
What is increased reactant concentration?
What is increased surface area?
What is increased temperature?
What is a catalyst?
4Al + 3O2 --> 2Al2O3
0.80 M of O2 disappears over the course of 15 seconds.
Determine the rate of O2.
The rate of Al2O3 appearance.
What is 0.036 M/s?
For the reaction 3E + 2F --> 2G, the rate quadruples when E is doubled.
The order of reaction for E.
What is 2?
The two requirements that must be met for a reaction mechanism to be valid.
What is the slow step's rate law matches the experimental rate law?
What is the net equation matches the actual reaction?
SO2Cl2 (g) <--> SO2 (g) + Cl2 (g)
Keq = 0.0058. At a point in time, [Cl2]=5.0 x 10-2 M and [SO2]=2.0 x 10-4 M, [SO2Cl2]=0.30 M.
The shift of the reaction (left, right, none).
What is shift right?
The cause of the rate slowing down as the reaction progresses.
What is lower reactant concentration?
CH4 + 2O2 --> CO2 + 2H2O
The product with the greatest rate of appearance.
What is H2O?
Rate = k[H2][N2]2
k = 1, [H2] = 0.25 M and [N2] = 0.30 M
The rate of reaction.
What is 0.0225 M/s?
H2O2 → 2OH
H2O2 + OH → H2O + HO2
HO2 + OH → H2O + O2
The overall net equation.
What is 2H2O2 --> 2H2O + O2?
The reason solids and liquids are not included in the equilibrium constant expressions.
What is solids and liquids do not have varying concentrations?