Chemical Equilibrium Flashcards

Open System

Energy and matter can be transferred in/out

Closed System

Energy can be transferred in/out

Physical Changes

are usually reversible

Chemcal Reactions

Only some are reversible

Physical Equilibrium

A state where phase changes occur at equal rates so macroscopic properties (like temperature and phase amounts) stay constant.

Chemical Equilibrium

A dynamic state where forward and reverse reaction rates are equal, keeping reactant and product concentrations constant.

Dynamic Equilibrium

In a closed system, physical changes and reversible chemical reactions eventually reach dynamic equilibrium, where the forward and reverse processes occur at equal rates and the relative amounts of reactants and products determine the position of equilibrium.

Reersibility of reactions

A reaction is reversible because particles can gain enough energy to overcome the activation energy barriers in both the forward and reverse directions, allowing products to convert back into reactants.

Where is the positioon of equilibrium in a conc vs time graph?

the flat line Means concentrationsrates of reaction are constant as there is no change in conc meaning that equilibrium is reached.