Reaction+Rates+and+Equilibrium

Guided Notes
(equilibrium condition) (equilibrium constant and expression)

Course Content
__ 17 - Collision Theory __ 17.A - Occur when reacting particles collide in an appropriate orientation and with sufficient energy. 17.B - Stable reactants require the input of energy, the activation energy, to initiate a reaction. 17.C - The rate of a chemical reaction is the change in the amount of reactants or products in a specific period of time. 17.D - Increasing the probability or effectiveness of the collisions between the particles increases the rate of the reaction. To change the reaction rate concentration and change of temperature or the pressure of gaseous reactants. 17.E - The rate at which a substance dissolves should not be confused with the amount of solute that can dissolve in a given amount of solvent (solubility). 17.F - Adding a catalyst provides an alternate pathway for a reaction, usually with a lower activation energy. With this lower energy threshold, more collisions will have enough energy to result in a reaction. __ 18 - Equilibrium __ 18.A - Some reactions appear to proceed only in one direction. 18.B - If a chemical system at equilibrium is disturbed by a change in the conditions of the system (e.g., increase or decrease in the temperature, pressure on gaseous equilibrium systems, concentration of a reactant or product), then the equilibrium system will respond by shifting to a new equilibrium state, reducing the effect of the change (Le Chatelier’s Principle). __16 - Energy in Reactions__ 16.G - All reactions are reversible to a degree and many reactions do not proceed completely toward products but appear to stop progressing before the reactants are all used up. 16.H - If given a graph showing the concentration of the reactants and products over the time of reaction, the equilibrium concentrations and the time at which equilibrium was established can be determined.

Practice Problems
Kinetics: page 628 - #3-6, 8-9 Equilibrium: page 628 - #10-15 Equilibrium Constant: page 628 - #16-22 Le Chatelier's Principle: page 629 - #27-35

Additional Links
The Equilibrium State simulation Le Chatelier's Principle animation