Factors Affecting The Rate Of A Reaction

Question 1

Which factors affects the frequency of successful collisions?

Answer 1

• temperature
• surface area
• catalyst
• conc. of a solution
• pressure of a gas

Question 2

What occurs when temperature is increased?

Answer 2

Particles gain speed
Move around more quicker 
More collision
More energy 
More successful collisions

Question 3

How does conc/pressure affect the remount of successful collisions?

Answer 3

Higher conc = more particles in same space
More pressure = same particles in smaller space
Both = more frequent collisions
= more successful collisions

Question 4

Increasing the surface area increases successful collisions because….

Answer 4

Break solid up into smaller += more surface area

Particles = more to collide with

Question 5

How do catalysts relate to the rate of a reaction? Example?

Answer 5

Catalyst = speeds up reaction without being used up
Lowers activation energy
By providing alternative reaction pathway

Biological catalyst = speeds up reactions in living things

Question 6

What is the equation for the rate of a reaction?

Answer 6

Amount / time