Topic 16.2 - Activation energy

Question 1

Arrhenius constant

Answer 1

k = Ae⁻ᴱᵃ/ᴿᵀ

k = rate constant 
A = pre-exponential factor
e = exponential 
Ea = activation energy (J mol⁻¹)
R = gas constant (J K⁻¹ mol⁻¹)
T = temperature (K)

Question 2

Pre-exponential factor

Answer 2

Formed by the steric factors (p) and the number of collisions (Z)

Takes into account the number of times the particles collide with the correct orientation