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Grade 11 Kinetics And Equilibrium Essay

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Unit 11: Kinetics and Equilibrium
Activated complex: an intermediate state that is formed during the conversion of reactants into products, the structure that results at the maximum energy point along the reaction path.
Activation energy: a chemical reaction is the difference between the energy of the activated complex and the energy of the reactants.
Catalyst: substance that increases the rate of a chemical reaction by reducing the activation energy, but which is left unchanged by the reaction.
Entropy: The measure of the disorder of a system, usually denoted by the letter S. A highly ordered system has low entropy.
Enthalpy: a thermodynamic property of a system. It reflects the capacity to do non-mechanical work and the capacity to release
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Reversible reaction: a chemical reaction where the reactants form products that, in turn, react together to give the reactants back.
Effective collisions: a collision between two reactants with the correct orientation and with sufficient energy to overcome the activation energy barrier
Reaction rate: the rate at which the reactants of a chemical reaction form the products.
Le Chatelier’s Principle: the principle when a stress is applied to a chemical system at equilibrium, the equilibrium will shift to relieve the stress.
Potential energy diagram: plots the change in potential energy that occurs during a chemical reaction. This first video takes you through all the basic parts of the PE diagram.
Stress: changes in temperature, number of moles, or volume which cause as system to be disturbed from equilibrium
Elastic collisions: a collision in which the total kinetic energy of the colliding bodies or particles is the same after the collisionas it was before
Common ion effect: describes the suppressing effect on ionization of an electrolyte when when another electrolyte is added that shares a common


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