1. Collision theory and Activation Energy

4. Temperature and Activation Energy

5.  Temperature and  in Ea

6. Arrhenius Equation

7. Arrhenius Equation
You may also come across it in a different form created by a mathematical operation on the standard one:
                                                      
"ln" is a form of logarithm. Don't worry about what it means. If you need to use this equation, just find the "ln" button on your calculator.

8. 2N2O5 (g)→4NO2 (g) + O2 (g)
k (s-1)
T (°C) 20 30 40 50 60

9. Finding Ea T (°C) T (K) 1/T (K) k (s-1) ln(k) 20 293 0.003413 0.000020
-10.82 30
303
0.0033
-9.53 40
313
-8.22 50
323
-7.00 60
333
-5.84

10. Ea = activation energy R = 8
Ea = activation energy R = J/mol·K T = absolute temperature in Kelvins A = frequency factor

11. The Arrhenius equation is often written in the logarithmic form:
                                                                                                                 
                                                                          Bestimmung von Ea
A plot of lnk versus 1/T produces a straight line with the familiar form y = -mx + b, where x = 1/T y = lnk m = - Ea/ R b = lnA The activation energy Ea can be determined from the slope m of this line: Ea = -m · R

13. Ea=-R(slope) Slope =Δln(k)/Δ(1/T) Ea=-(8.3145J/K*mol)(-12000K)
=100,000 J/mol