Exam 2 Flashcards
First order reaction intergrated formulas and half life
Ln (At/Ao) = -kt
t1/2 = 0.693/k
Second order reaction intergrated formulas and half life
1/At - 1/Ao = kt
t1/2 = 1/(Ao)(k)
Formula for Ea slop
To work out Ea
And to set up for a graph
-Ea/R
Ln (K2/K1) = -Ea/R (1/T2 - 1/T1)
Ln K = -Ea/R (1/T) + Ln A
What are the units for K constant in kinetics for:
Overall first order
Overall second order
Overall third order
1/s
1/M . S
1/M^2 . S
What is the units for keq
NO UNITS
What is the R of D
What is the R of A
-1/coeff (Delta conc/ Delta time)
1/coeff (Delta conc/ Delta time)
What is the Delta G formula
Delta G = -RT Ln K
What is the R constant
What is the R constant for gases
- 314 J/Kmol
0. 08206
When is X considered small
x 10 ^-4
What is the formula for Kp
Kp = Kc (RT)^ product mol - reactant mol
R = 0.08206
Stoichio coeff matters on R and T
When Keq < 1
When Keq > 1
When Keq = 1
Reactant favored = moves to product
Product favored = moves to reactant
Equilibrium
When Q < K
When Q > K
When Q = K
Reactant favored = moves to product
Product favored = moves to reactant
Equilibrium
What Ea does EXO have, why?
What Ea does ENDO have, why?
Low Ea = making bonds, Reactants => Products
High Ea = breaking bonds, Products => Reactants
Kinetics deals with
Reactants
Initials
Equilibrium deals with
Reactants and Products
At equilibrium
