Controlling Equ Composition Flashcards
1
Q
Thermodynamically stable
A
when a reaction favors product(s) at equilibrium (temperature dependent)
2
Q
Kinetically metastable
A
when a product favored reaction proceeds so slowly that it is considered not to be occurring (Ea is too high)
3
Q
When is metastability used?
A
When thermodynamic stability does not apply or explain the reaction
4
Q
Kinetic control
A
where the product mixture of competing reactions is determined by reaction rates
5
Q
Thermodynamic control
A
all reactions occur fast enough so that equilibrium can be achieved
6
Q
How to determine which products will form (competing reaction)
A
based on temp, (low temp, the one with lower Ea but possibly less thermodynamically stable will form) compare Ea and thermodynamic stability
