A State of Dynamic Balance Vocabulary

free energy

• the energy that is available to do work—the difference between the change in enthalpy and the product of the entropy change and the absolute temperature

• the energy that is stored in chemical bonds and released during a reaction

• the energy that is lost as heat during a process

• the energy that is required to initiate a chemical reaction

reversible reaction

• a reaction that can occur in both the forward and the reverse directions

• a reaction that only occurs in the forward direction

• a reaction that only occurs in the reverse direction

• a reaction that cannot occur in any direction

chemical equilibrium

• a state in which the forward and reverse reactions balance each other because they take place at equal rates

• a state in which only the forward reaction occurs

• a state in which the reverse reaction is faster than the forward reaction

• a state in which no reactions occur

Tags

NGSS.HS-PS1-6

law of chemical equilibrium

• states that at a given temperature, a chemical system may reach a state in which a particular ratio of reactant and product concentrations has a constant value

• states that energy cannot be created or destroyed, only transformed

• states that the total mass of reactants equals the total mass of products

• states that the rate of reaction is proportional to the concentration of reactants

equilibrium constant

• the ratio of product concentrations to reactant concentrations, with each raised to the power equal to its coefficient in the balanced equation (K_eq)

• the sum of reactant concentrations to product concentrations, with each raised to the power equal to its coefficient in the balanced equation

• the difference between product and reactant concentrations, with each raised to the power equal to its coefficient in the balanced equation

• the ratio of reactant concentrations to product concentrations, with each raised to the power equal to its coefficient in the balanced equation

Tags

NGSS.HS-PS1-6

homogeneous equilibrium

• a state of equilibrium in which all the reactants and products are in the same physical state

• a state of equilibrium in which reactants and products are in different physical states

• a state of equilibrium involving only gaseous reactants

• a state of equilibrium involving only liquid reactants

heterogeneous equilibrium

• the reactants and products of a reaction are present in more than one physical state

• a reaction that can occur in both directions

• the reactants and products are in the same physical state

• the ratio of product to reactant is different