13F - Catalysis Flashcards
1
Q
Theory: How do catalysts affect rate of rxn.
A
They dont.
2
Q
Def: catalsyst
A
Increase rxn rate without altering energies of reactants and products.
Consumed and regenerated, dont appear in overall
3
Q
Theory: how do catalysta affect Ea and elementary steps.
A
Lower Ea for a rxn
More elem steps.
4
Q
Def: homo vs hetero
A
Homo: same phase a reactants so irs dissolved
- small mol or ions
Hetero: diff phases
- Solid with large SA:V ratio
- Noble metals, powederw,s nanon-crytals
