Dynamic Equilibrium

These flashcards cover key concepts related to dynamic equilibrium, reaction quotient, and equilibrium constant.

Dynamic Equilibrium

A state in a chemical reaction where the rates of the forward and reverse reactions are equal.

Reaction Quotient (Qc)

A fraction with product concentrations in the numerator and reactant concentrations in the denominator, used to predict the direction of a reaction.

Equilibrium Constant (K)

A constant that expresses the ratio of the concentration of products to reactants at equilibrium.

Q < K

Indicates that the system will proceed in the forward direction to reach equilibrium.

Q = K

Indicates that the system is at equilibrium, with no net change in concentrations.

Q > K

Indicates that the system will proceed in the reverse direction to reach equilibrium.

Homogeneous Reaction

A reaction in which all the reactants and products are in the same phase (e.g., all gases or all liquids).

Heterogeneous Reaction

A reaction involving reactants and products in different phases.

Kc vs Kp

Kc is the equilibrium constant for concentrations (in molarity), while Kp is for partial pressures (in atm).

Stoichiometric Coefficient

The number that appears in front of a component in a balanced chemical equation, used to determine the power for concentrations in equilibrium expressions.