Class notes
Kinetics
- Institution
- University Of Ottawa (U Of O )
Introduction to Kinetics
[Show more]
Seller
Follow
Content preview
KineticsFactors AffectingRalesi
rate 2 collision frequency 8 energy
1 Concentrations of reactants
2 Physical state of reactants
3 Temperature
4 Addition of catalyst
collisionTheory Basis of the RateLaw
Particlesmust collide in order toreact
P in concentration of a reactant leads to 9 collisions E Preaction rate
of collisionsdepend on the product of the ofreactant particles nottheirsum
KMT can beused to calculate collision density
Ex gasesundergo ILS
1030 collisions hear STP if every collision yieldedproduct then theoreticalrate 106Mt
actualrates are severalorders of magnitudeless typical actualrate to 3Mls Soonly a fraction of
collisions yield a run
Collision Theory
Reactions require
1 activationenergy
2 correct geometry
Reactionprofilesi
Theactivatedcomplex is a hypothetical specieslying betweenreactants r products at a
, point on the run profilecalled the transitionstate
Reactionprofile diagram of energyvs reactionprogress
Effect of temperature on Rate constants
P temperature 9 reactionrates 2 rateconstants
very fewexceptions to thisrole
an enzyme catalystreaction can begin to slowdown as the temperature is increased since the
enzyme can become denatured at high temperature
Effect of T on collision frequency
If activation barrier is high only a fewmolecules have sufficient kineticenergyor the reaction
is slower
As temperature P reaction rate P
Effect of temperature on Reaction Ratesi
Arrhenius demonstrated that
many rateconstants vary with temperature according to
the equation i k Ae EaIRT A pre exponential factor
In K LEf Ly In A
Temperature dependence of Ki
For graphs of Ink YT y mxtb Ink LEf Ly In A
vs t
slope inclercept _In A
EPI k InA
Slope
thk
HT
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller samaelhelaly. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$10.86. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
60904 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
