The Boltzmann Factor

Question 1

What is KT

Answer 1

Average thermal energy per particle

Question 2

What is the activation energy?

Answer 2

Energy needed to make something happen eg.

Change of state

Question 3

At What range do processes happen at a reasonable rate?

Answer 3

When particle have ration Ea/KT between 15-30

So 15-30 kt

Question 4

How to calculate the fraciton of particles sith extra energy?

Answer 4

• if the extra energy needed is big f will be small as very collisions would result in that activation eneegy
• the ration is NE=f^N

Question 5

Why do very small proportion of particles react?

Answer 5

For a fair rate the ration of Ea/KT needs to be betweend 15-30
This means particles would have to get 15-30 times there avergae eneergy when they collide
The fraction this happens would be f^15-30
-so a very small proportions get this activation energy

Question 6

Why is the small fraction of succesfull collisions not negliglbe?

Answer 6

-huge numbers of particles collide each second so fraction still adds to a large number

Question 7

What does the boltzmann factor tell u?

Answer 7

Ratio of particles with energy levels E joules apart (at temperature N)

Question 8

What is the boltzmann factor an approximation for?

Answer 8

The probability a particle has energy of at least E

Question 9

Why does boltzmann factor vary with temp ?

Answer 9

For any give reaction k and Ea are fixed so only t changes

Question 10

What is rate of reaction proportional to?

Answer 10

Boltzmann factor