Rates of Reactions Flashcards
1
Q
What is the rate of a reaction?
A
change in concentration/change in time
2
Q
What is the overall order of a reaction?
A
The sum of all the individual orders of the reactants
3
Q
What is the rate equation?
A
rate = k[A]m[B]n
4
Q
What is the half-life of a reactant?
A
The time taken for a reactant’s concentration to decrease by half
5
Q
How do you find the rate of a reaction at any time using a graph
A
Draw a tangent and find the gradient
6
Q
How can you calculate k from half life?
A
K = ln2/T1/2
7
Q
How do you calculate k from a rate-concentration graph of a first order reactant?
A
Gradient of the straight line
8
Q
What is the rate-determining step?
A
The slowest step in the reaction mechanism of a multi-step reaction
