CHEM 112 Lecture Notes - Lecture 7: Equilibrium Constant

• School: UMASS-Amherst
• Department: Chemistry
• Course: CHEM 112
• Professor: Xueying Qin

Document Summary

When rate of forward and reverse reaction are equal reaction arrows in each direction can denote this. Does not mean same amount of reactant and product. Concentrations do not need to be equal. Can go in favor of products or reactants (can be determined by which you have relatively more of) Equilibrium constant =keq (make sure its a capital k) Equilibrium constant only changes when temperature changes. Rate constant does not have to be equal for forward reaction and reverse reaction. When equilibrium is reached, the concentration of the products and reactants no longer change. Coefficients in front of the reactant turn into the exponents when plugging into equation. Any products or reactants that are solid or liquid should not be included in the equation. Only include reactants and products in the gaseous or aqueous state. The initial concentration of products will always be zero. Change in concentration for a reactant will always be negative.