Factors That Influence Rate Of Reaction

Question 1

What are the five factors

Answer 1

1. Temp
2. Concentration
3. Surface area
4. Catalyst
5. Nature of reacting substances

Question 2

Temperature

Answer 2

As temp increases rate increases:
- temp increases
- ek increases
- molecules move faster
- more collisions per unit time
- more effective collisions per unit time
- more molecules colliding with correct orientation and correct activation energy
- Therefore rate increases

Question 3

Concentration (aq) / pressure (g)

Answer 3

As concentration inc:
- more particles per unit volume
- more collisions per unit time
- more effective collisions per unit time
- more molecules colliding with correct orientation and correct activation energy
- therefore rate increases

Question 4

Surface area

Answer 4

As surface area inc:
- more particles exposed for reaction
- more collisions per unit time
- more effective collisions per unit time
- more molecules colliding with correct orientation and correct activation energy
- therefore rate inc

Question 5

Catalyst

Answer 5

If catalyst is added:
- it lowers the activation energy
- more molecules with the activation energy
- there are more effective collisions per unit time
- more molecules colliding with correct orientation and correct activation energy
- rate inc