Kinetics Flashcards
Tells us how fast a number of moles of one chemical species are being consumed to form another chemical species.
Rate of Reaction
Type of Reactor.
Uniform composition everywhere in the reactor, but of course the composition changes with time.
Batch Reactor
Type of Reactor.
Fluid passes through the reactor with no mixing of earlier and later entering the fluid, and with no overtaking. It is as if the fluid moved in single file through the reactor.
Plug Flow
Type of reactor.
Uniformly mixed, same composition everywhere, within the reactor and at the exit.
Mixed Flow Reactor
The reaction when a single stoichiometric equation and single rate equation are used to represent the progress of a reaction.
Single Reaction
The reaction when more than one stoichiometric equation is chosen to represent the observed changes, and more than one kinetic expression is needed to follow the changing composition of all the reaction components.
Multiple Reaction
Reactions in which the rate equation corresponds to a stoichiometric equation.
Elementary Reactions
The reaction when there is no direct correspondence between stoichiometry and rate.
Non-elementary Reactions
Enumeration.
Kinetic Models for Nonelementary Reactions
- Free Radicals
- Ions and Polar Substances
- Molecules
- Transition Complexes
- Nonchain Reactions
- Chain Reactions
Free atoms or larger fragments of stable molecules that contain one or more unpaired electrons
Free Radicals
True or False.
A reaction follows an elementary rate law when the reaction orders are identical with the stoichiometric coefficients of the reacting species for the reaction as written.
True
True or False.
Rate laws are determined by experimental observation.
True
A simple formula for the temperature dependence of the reaction rate constant, and therefore, the rate of a chemical reaction.
Arrhenius Equation
True or False.
The rate of a reaction depends on the height of the barrier (the activation energy) because only a small fraction of the number of molecules at a given temperature have sufficient energy to get over the barrier.
True
Single stoichiometric equation, single rate equation.
Single Reaction
