Chapter 10
No description yet. This curated deck is ready for daily study.
Card preview (11)
What is the rate of reaction?
1) how fast a reactant is used up OR 2) how fast a product is formed
rate =
change in concentration / time
What are the units of rate?
mol dm⁻³s⁻¹
When is the rate of reaction fastest?
at the start of the reaction
Why is the rate of reaction fastest at the start of the reaction?
each reactant is at highest concentration
Does the rate of reaction speed up or slow down as the reaction proceeds?
slow down
Why does the rate of reaction slow down as the reaction proceeds?
reactants are being used up + concentrations decrease
What happens when one of the reactants has been completely used up?
1) concentration stop changing 2) rate of reaction = 0
What factors change the rate of a reaction?
1) concentration/pressure 2) temperature 3) catalyst 4) surface area of solids
What does the collision theory state?
two reacting particles must collide for a reaction to occur
When will a collision be effective?
1) particles collide with correct orientation 2) particles have sufficient energy to overcome activation energy