18+Rates+of+Reactions+and+Equilibrium

=Objectives= 18.1 18.2 18.3 18.4 18.5
 * How is the rate of a chemical change expressed?
 * What four factors influence the rate of a chemical reaction?
 * How do the amounts of reactants and products change in a chemical system at equilibrium?
 * What three stresses can cause a change in the equilibrium position of a chemical system?
 * What does the value of //K//// eq //indicate about the equilibrium position of a reaction?
 * What is the relationship between the solubility product constant and the solubility of a compound?
 * How can you predict whether precipitation will occur when two salt solutions are mixed?
 * What are two characteristics of spontaneous reactions?
 * What part does entropy play in chemical reactions?
 * What two factors determine the spontaneity of a reaction?
 * Is the Gibbs free-energy change positive or negative in a spontaneous process?
 * What is the general relationship between the value of the specific rate constant, //k//, and the speed of a chemical reaction?
 * What do the hills and valleys in a reaction progress curve represent?

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