This preview shows page 1. Sign up to view the full content.
Unformatted text preview: of ln k vs
1/T with a negative slope. Slope of the line =  Ea/R. Thus Ea can be determined; T
must be in Kelvin, not °C.
o Arrhenius Equation gives the dependence of k on T (equation given in the Data
Ea − RT
booklet): k = A e
: ln k = ln A −
o Ea ⎛ 1 ⎞
⎜⎟
R ⎝T ⎠ OR log10 k = log10 A − Ea ⎛ 1 ⎞
⎜ ⎟ where: A, the
2.303 R ⎝ T ⎠ Arrhenius constant is the collision factor that represents the frequency of successful
collisions with the favourable geometry, R is the Ideal Gas Constant (= 8.314 J mol1 K1
), Ea is the activation energy (the minimum energy required for a reaction to occur),
and T must be in Kelvin scale.
• Molecularity is based on proposed mechanism and refers to the number of particles in
the slow, ratedetermining step (i.e., the number of species involved in making the
transition sta...
View
Full
Document
This note was uploaded on 09/23/2010 for the course CS 001 taught by Professor Jix during the Spring '10 term at Riverside Community College.
 Spring '10
 jix

Click to edit the document details