U1: Topic 7 Kinetics Flashcards
The rate of a chemical reaction usually depends on the….
The concentration of reactants.
Orders of reaction are used to relate the rate of reaction to….
Reacting species.
The slowest step of a reaction is called?
Rate determining step.
If changing concentration of reactant A has no effect on rate of reaction then?
Reaction is zero order with respect to A.
If doubling the concentration of a reactant A doubles rate of reaction then the reaction is?
First order with respect to A.
The order of reaction can only be determined from?
Experimental data.
Rate of first order can be expressed as
Rate = k[A] where k is …. and [A] is?
K= constant
[A] = concentration of reactant
If doubling concentration of reactant quadruples rate of reaction then?
Reaction is second order with respect to A.
Rate of second order can be expressed as?
Rate = K[A]^2
What’s the overall order of a reaction?
Sum of all the powers to which the concentration of the reactants are raised in the rate question.
First order units?
S^-1
Second orders units?
L mol^-1 s^-1
Third orders units?
L^2 mol^-2 S^-1
Fourth orders units?
L^3 mol^-3 S^-1
Fifth orders units?
L^4 mol^-4 S^-1
Reactions usually occur by a series of steps called?
A reaction mechanism.
The rate of a chemical reaction depends on?
Slowest step of the mechanism called the rate determining step (RDS)
Experimentally determined rate equations can be used to determine possible….
Reaction mechanisms
