Kinetics Flashcards
What is the instantaneous rate equation?
aA + bB –> cC +dD
What is rate?
Rate is the number of times a reaction happens per second this means how fast the product increases and how fast the reactant decreases
What is the difference between average and instantaneous rate
Average rate is the rate over the whole reaction where is instantaneous rate is at one set point in time
What are the six factors that can affect rate?
Nature of the reaction, temperature, light, state, concentration and catalysts
Can you predict the right law from the balanced overall equation
No
What is a zeroth order reaction?
Include;
- Rate =
- Unit of K =
- Graph equation =
- Half Life =
Rate ∝ k[A]o
Rate = k
Unit of K = mol L-1
Graph equation = [A] = [A]o+ kt
Half Life = t1/2 = [A]0 / 2k
What is a First order reaction?
Include;
- Rate =
- Unit of K =
- Graph equation =
- Half Life =
Rate ∝ k[A]
Rate = k [A]
Unit of K = s-1
Graph equation = In[A] = In [A]0 -kt
Half Life = t1/2 = In2/ k
What is a First order reaction?
Include;
- Rate =
- Unit of K =
- Graph equation =
- Half Life =
Rate ∝ [A]2
Rate = k[A]2
Unit of K = Lmol-1s-1
Graph equation = 1/[A] =1/[A]o +kt
Half Life = t1/2 = 1/k[A]o
What are the 2 conditions of collision theory
- The molecules have to have enough energy to surpass the activation energy
- The molecules have to be correctly aligned
What is 0oC in K
0oC = 273.15K
What is Arrhenius’s Equation based off?
y = mx+c
What are the following components of Arrhenius’s Equation?
- k
- Ae
- Ea
- R
- T
- k = rate constant
- Ae = Orientation
- Ea = Activation Energy
- R = Gas constant
- T = Temperature
Can a catalyst appear in the overall balanced equation?
No they do not
Are catalysts found in the rate law for a reaction
Homogeneous catalysts usually appear in the rate law
