Order Reactions + Reaction Rate Flashcards
(14 cards)
Zero-Order Reaction
rate law
rate = k
Zero-Order Reaction
units of rate constant
Ms^-1
Zero-Order Reaction
plot needed for linear fit of rate data
[A] vs. t
Zero-Order Reaction
relationship between slope of linear plot and rate constant
k = -slope
First-Order Reaction
rate law
rate = k[A]
First-Order Reaction
units of rate constant
s^-1
First-Order Reaction
plot needed for linear fit of rate data
ln[A] vs. t
First-Order Reaction
relationship between slope of linear plot and rate constant
k= -slope
Second-Order Reaction
rate law
rate = k[A]^2
Second-Order Reaction
units of rate constant
M^-1s^-1
Second-Order Reaction
plot needed for linear fit of rate data
1/[A] vs. t
Second-Order Reaction
relationship between slope of linear plot and rate constant
k = slope
Six factors that affect the reaction rate:
↑ temperature
↑ pressure
↑RXN surface area
↑ concentrationmaking the “difficult” reactant the limiting reagent (LR)catalyst
Reaction mechanisms (steps)
three criteria that is used to evaluate whether a reaction mechanism is either acceptable or not acceptable
- show that the intermediates cancel
- molecularity (count the total number of reactants in each elementary step)
- check to see if the rate law for the rate determining step is equivalent to the rate law for the overall reaction