Rate equations Flashcards
Describe the three concentration time graphs graphs for different order reactants
0 order - straight
first and second order curved hard to distinguishWH
What type of graph should be plotted to discern the order of a reactant
Rate- concentrationW
What does the rate-concentration graph look like for a first order reactant
straight flat line
What does the rate-concentration graph look like for a second order reactant
Directly proportional straight line increase
What does the rate-concentration graph look like for a third order reactant
Exponential increase
Which rate is used to plot rate graphs
Initial rate at t=0
State the arrhenius equation
k= A e^-Ea/RT
define every part of the arrhenius equation
k - constant
A - pre exponsnetial facotr
Ea activation energy
R gas constant
T temp in kelvin
ln equation of arrhenuus
lnk= -Ea/RT +lnA
ln arrhenius for EA
Ea = (lnA-lnK)RT
What two values do you plot for an arrhenius plot
1/T x
lnK on y
What values can you obtain from an arrhenius plot
lnA - from y intercept
gradient = -Ea/R