Chemical Kinetics Flashcards
The order of a reaction is?
The exponent on the concentration of a reaction
Which order of reaction has no effect on the concentration of reactants
Zero Order of reaction does not depend on conc. Of reactants
Give the formula for calc. The unit of rate constant is ?
K= M^1-n . T^-1
What is the meaning of half life of a reaction?
This is the time it take to decrease the concentration of of a reactant by half
What is the formula for half life of a zero order of reaction?
[A]/2K
What is the formula of half life for the first order reaction?
In2/K
What is the formula for the half life of second order of reaction?
1/K[A]
Which half life of a reaction does not depends on the concentration of reaction?
The first order reaction
In all cases of reaction, the half life depends on ? And it is found in what part of the fraction?
The rate constant K… in the denominator
Formula for integrated rate law for zero order reaction, first and second
A2 = -Kt + [A1]
In [A2]= -Kt + In [ A1]
1/[A2] = -Kt + 1/[A2]
In which order of reaction is the slope positive
Second order
What is reaction mechanism?
This is the process or step by which a reaction takes place.
What is a rate determining step?
This is the slow step in a reaction.. the stoichoimetry of this step determine the rate law of a reaction, not the stoichoimetry of the overall reaction
How do you distinguish between a catalyst and an intermediate in a reaction?
When the reaction proceed, a catalyst is consumed in the first reaction and the produce later… while the intermediate is produced first in the reaction and then consumed later
The overall order for a unimolecular is
First order
A—->B
R=K[A]
