kinetics - maxwell distribution curves

Question 1

What does the Maxwell-Boltzmann distribution curve show?

Answer 1

Shows the distribution of the energies and the activation energy

Question 2

What graph does this show and explain

Answer 2

Temperature :
-Higher propoertion of the particles possess the minimum amount of energy to cause a chemical reaction
- curve flattens and the peak shifts to the right (if increased)

Question 3

What does this curve show?

Answer 3

Catalysts
- provide alternative reaction pathway
-reduces the activation energy needed to create a chemical resction
- more particles will overcome the minimum Ea , increase in successful collisions and increase ROR

Question 4

What does this curve show?

Answer 4

Reduce volume (pressure)
-number of particles stay the same but the particles are forced closer together maeanong more successful collisions and therefore increased ROR.
-no change to diagram

Question 5

What does this curve show

Answer 5

Reduction in temperature:
- less particles with Ea
- graph shifts to left with lower EMP
- graph is more steep
- less successful collisions

Question 6

How does the reaction continue to work when most molecules have a lower energy than Ea?

Answer 6

Reactions still continue to undergo chemical reactions because the innerective collisions can cause them to go above the Ea eventually , they will gain energy

Question 7

Why does a small increase in temperature lead to a large increase in the ROR ?

Answer 7

More particles will have an energy breather than or equal to Ea.
Greater proportion of frequency of collisions
ROR increases