Initial Rates

Question 1

Initial Rate of reaction

Answer 1

Rate at the start of the reaction
Found from conc-time graph
When T=0 draw tangent
Calculate gradient = rate

Question 2

Initial rate method

Answer 2

time how long it takes for a set amount of product to form at beginning of a reaction to find the initial rate

Question 3

Initial rate calculations

Answer 3

No of moles of products there are
No of moles of reactants you’re interested in when products form
Divide by volume to find conc
Change in conc over time = rate of reaction

Question 4

Clock reactions

Answer 4

Add a known amount of substance that reacts with product interested in
Substance reacts immediately as product forms
As soon as the substance used up, the presence of the unreacted substance causes a colour change
The quicker the endpoint the faster the reaction