Arrhenius Equations

Question 1

What is the Arrhenius Equation?

Answer 1

k = Ae ^ (-Ea/RT)
A = pre exponential factor
e = exponential
Ea = activation energy
R = constant
T = temperature

Question 2

What is the Arrhenius equation graph?

Answer 2

x = 1/T
y = In(k)

Question 3

How do you calculate Ea from the Arrhenius graph?

Answer 3

1. Plot Ink against 1/T
2. calculate the gradient
3. grad = Ea/R
4. Ea = grad x R
5. divide by 1000 to get Ea in kJmol-1

Question 4

What is A in terms of e?

Answer 4

A = e^c
c = y intercept