handouts 1-3 trimolecular Flashcards
1
Q
what is a pseudo-second order reaction
A
the concentration of the inert collision partner doesn’t change noticeably during the reaction so acts like a second order keff = k[M]
2
Q
integrated rate law for pseudo second order reaction
A
1/c(t) = 1/c0 + 2 keff t
3
Q
how do recombination reactions proceed
A
via a trimolecular step or a sequence of bimolecular steps
4
Q
why are trimolecular steps slow
A
unlikely three will collide at one time
5
Q
prerequisite to multiple bimolecular steps
A
if A2* lives long enough to experience a stabilising collision with M
6
Q
when is A2* unlikely to be stable
A
when it is diatomic as all energy goes to stretching vibrations
7
Q
chemical equation of recombination reactions
A
2A = A2
