Chemical Equilibrium

Flashcards covering key vocabulary and concepts related to chemical equilibrium, K, Kp, and problem-solving techniques.

Kp

Equilibrium constant in terms of pressure for gas reactions, related to K but not always equal.

Chemical Activity

Equilibrium constants are based on activities, not concentrations or pressures, making them unitless.

Activity (a)

An effective concentration or pressure relative to a reference state; used in equilibrium constant calculations.

Heterogeneous Chemical Equilibria

Equilibria involving more than one phase (solid, liquid, gas).

Effective Concentration of Pure Solid or Liquid

Equals 1; do not include pure solids or liquids in the equilibrium expression.

ICE Table

A setup used for determining equilibrium concentrations, especially when the system is not at equilibrium.

Reaction Quotient (Q)

Used to determine the direction a reaction will move toward equilibrium based on initial concentrations.