Wk 5a Kinetics & aerosol resistance model

Wk 5a Kinetics & aerosol resistance model -...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Gas Phase: Elementary vs. Overall Reactions Elementary Reactions that cannot be broken down into two or more simpler reactions Unimolecular, bimolecular, termolecular » Bimolecular is the most common » Unimolecular and termolecular are less likely » 4 bodies colliding to react is highly improbable! Overall Describes the reactants & products, but NOT the mechanisms of reaction
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Types of Elementary Reactions: only 3 M is a 3 rd body that is inert, but is needed to remove excess energy from the intermediate complex
Background image of page 2
For an OVERALL reaction, the rate is: For an ELEMENTARY reaction, the rate is: the coefficients from the overall reaction be zero For an elementary reaction: a + b 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Yet, for thermal oxidation of NO by oxygen 2NO + O 2 2NO 2 Since the definition of the rate is:
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lifetimes of molecules t 1/2 = when reactant reaches ½ [ ] τ = 1/e of the original [ ]
Background image of page 6
Methane has a long atmospheric lifetime! As the alky chains get longer the molecule becomes more
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/17/2008 for the course CHEM 641 taught by Professor Allen during the Winter '08 term at Ohio State.

Page1 / 20

Wk 5a Kinetics & aerosol resistance model -...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online