13E - rxn mechanisms Flashcards
1
Q
Def: What is a rxn mech?
A
Series of elementary steps in which rxn occurs?
2
Q
Def: what is the rate-determing step.
A
Elem step which is slowest, determines rate law.
3
Q
Def: What is molecualrity of elem steps. What are the 3 types.
A
Unimolecular: One reactant
Bi-molecular: Two reactants
Termolecular: More, very rare
4
Q
Def: What is intermediate in terms of rate law?
A
Compounds that get cancelled out before and to the slow step when they are combined.
5
Q
Theory: What is steady-state approx?
A
A slow step sets up pseudo-eqm in steps before it. SS concentration of intermediates for those rxns is zero.
6
Q
Theory: What valdifies a rxn mechanism?
A
- Elem steps asdd up too overall rxn
- Prdict rate law is consistent with experimental.
