3.1.5 - Kinetics

Question 1

Temperature effect on Maxwell-Boltzmann distribution

Answer 1

1. Peak shifts to the right
2. Peak is lower
3. Area under >Ki is increased

Question 2

Pressure effect on rate of reaction

Answer 2

1. Increased ROR
2. Particles closer together
3. More frequent succesful collisions

Question 3

Concentration effect

Answer 3

1. Increased ROR
2. More particles, more frequent sucessful collisions
3. Higher chance of reaction

Area under graph changes

Question 4

3 ways of measuring rate of reaction

Answer 4

1. Precipitate formation (cross under flask)
2. Amount of mass (gas lost)
3. Volume of gas produced (gas syringe)

Question 5

Catalyst definition

Answer 5

Increases ROR without being used up. Provides alternate reaction pathway with lower activation energy.

Question 6

What happens if you remove half the reactant?

Answer 6

Halve the line on the graph

Question 7

Large excesses and ROR relationship

Answer 7

1. Concentration change is negligible
2. No effect on ROR

Question 8

order with respect to a reactant

Answer 8

0 = Constant gradient as H+ decreases