Factors Affecting The Rate Of Reaction

Question 1

Concentration

Answer 1

• increase in concentration, increased rate of reaction
• more particles in the same volume
• more frequent collisions
• more successful collisions per unit of time

Question 2

Pressure

Answer 2

• increase in pressure, increases rate of reaction
• same number of particles in a smaller volume
• more frequent collisions per unit of time

Question 3

Temperature

Answer 3

• Increased temp increases rate of reaction
• The particles have more kinetic energy
• There are more frequent collisions with the required energy
• More successful collisions per unit of time

Question 4

Surface area

Answer 4

• increased surface area increases rate of reaction
• more of the reactant particles are exposed
• more frequent collisions
• more successful collisions per unit of time

Question 5

Catalyst

Answer 5

Provides an alternative route with a lower activation energy
More successful collisions per unit of time