CHM 111 Lecture Notes - Lecture 2: Alkali Metal, Alkaline Earth Metal, Lithium Hydroxide

• School: University of Miami
• Department: Chemistry
• Course: CHM 111
• Professor: Valentine St. Hilaire

Document Summary

Reaction dynamics: forward reaction- reactant concentration decreases and the product concentration increases. As the reactant concentration decreases, so does the forward rate: reverse reaction- products can react to reform some of the reactants. As product concentration increases, the reverse rate increases. Single arrow- all reactant molecules are converted to products in the end. Double arrow- the reaction stops when some of the reactant molecules form products. Chemical equilibrium: equilibrium- a state in which there are no observable changes as time goes by, chemical equilibrium- equilibrium where the forward and reverse rates are equal and the concentrations of reactants and products remain constant. Law of mass action- the relationship between the products and reactants at equilibrium. K = equilibrium constant, dimensionless, only accounts for gases. Concentrations are expressed as molarity or partial pressure. If k << 1 reverse reaction is favored (more reactants) If k = 1 neither direction is favored (forward reaction is halfway)