Rate and concentration Flashcards
What is the rate equation?
rate = k [A]ᵐ [B]ⁿ
What is ‘k’?
Rate constant
What is ‘m”?
Order with respect to A
What is ‘n’?
Order with respect to B
What is ‘m+n’?
Overall order of reaction
What are the orders of reaction?
0, 1 and 2
What is order of reaction?
The power to which the concentration of a reactant is raised in the rate equation
What is overall order?
The sum of the individual orders of reactions in the rate equation - ‘m + n’
What is the rate constant?
The constant that links the rate of reaction with the concentrations of the reactants raised to the powers of their orders in the rate equation
What is order 0?
Rate is unaffected by changes in concentration
What happens if you double the concentration for order 0?
The rate stays the same
How do you write order 0?
rate = [A]⁰
What is order 1?
Rate is directly proportional to concentration
What is order 1?
Rate is directly proportional to concentration
What happens if you double the concentration for order 1?
The rate doubles
How do you write order 1?
rate = [A]¹
What is order 2?
Rate is proportional to concentration²
What happens if you double the concentration for order 2?
The rate increases by 2²
How do you write order 2?
rate = [A]²
What is the reactant/time graph for 0 order?
Negatively directly proportional
What is the reactant/time graph for 1 order?
Negatively curved
What is the reactant/time graph for 2 order?
More negatively curved than 1st
What is the reactant/rate graph for 0 order?
Straight line through y axis
What is the reactant/rate graph for 1st order?
Directly proportional
What is the reactant/rate graph for 2nd order?
Positively curved
