CHEM 1312: Chapter 15

Study Flashcards

15 Cards in this Set

Front	Back
Reversible Process	A process in which the products can react to form reactants.
equilibrium	a state in which forward and reverse processes are occurring at the same rate
reaction mechanism	The sequence of events that describes the actual process by which reactants become products
intermediates	a chemical species that is produced in one step of a reaction mechanism and consumed in a subsequent step
Rate Limiting Step	slowest step 1st or 2nd step the overall reaction is determined by rate of step; highest activation energy
Elementary Reaction (Elementary Step)	a reaction that occurs in a single collision of the reactant molecules
molecularity	the number of molecules involved in a specific step in a reaction mechanism
unimolecular	describes a reaction involving one reactant molecule
bimolecular	describes a reaction in which two reactant molecules collide
rate-determining step	The slowest step in a reaction mechanism
catalyst	substance that increases the rate of a chemical reaction without itself being consumed
equilibrium	forward and reverse processes occurring at the same time
A reaction with a small equilibrium constant is...	Lies to the left, is "reactant-favored" *Smaller than 1x10^ - 2
A reaction with a large equilibrium constant is...	Lies to the right, is "product-favored" *Greater than 1x10^2
heterogenous equilibria	reactants and products are in different phases