What is the definition of chemical equilibrium quizlet?

Asked By: Jorda Barnils | Last Updated: 1st May, 2020
Category: science chemistry
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Chemical Equilibrium. A state in which the rates of forward and reverse reactions are the same. An active, dynamic condition, not static. All substances are being made & unmade at the same rate, so their concentrations are constant. Not necessary for products and reactants to be equal.

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Then, what is meant by chemical equilibrium?

A chemical reaction is in equilibrium when the concentrations of reactants and products are constant - their ratio does not vary. Another way of defining equilibrium is to say that a system is in equilibrium when the forward and reverse reactions occur at equal rates.

Secondly, what characteristics define a system at equilibrium? Equilibrium may only be obtained in a closed system. 2. The rate of the forward reaction is equal to the rate of the reverse reaction. The consistency of observable or physical properties such as concentration, color, pressure, and density can indicate a reaction has reached equilibrium.

Besides, what are the types of chemical equilibrium?

There are two types of chemical equilibrium:

  • Homogeneous Equilibrium.
  • Heterogeneous Equilibrium.

Which of the following are characteristics of a chemical system at equilibrium?

Main characteristics of chemical equilibrium: (1) At equilibrium, the rates of forward and reverse reactions are equal. (2) All the reactants and products are present at equilibrium. (3) The concentrations of the reactants and products reach constant values and these are called equilibrium concentrations.

27 Related Question Answers Found

What is an example of an equilibrium?

equilibrium. An example of equilibrium is in economics when supply and demand are equal. An example of equilibrium is when you are calm and steady. An example of equilibrium is when hot air and cold air are entering the room at the same time so that the overall temperature of the room does not change at all.

What is the importance of chemical equilibrium?

For equilibrium to occur, neither reactants nor products can escape from the system. Chemical equilibria are of importance in explaining a great many natural phenomena, and they play important roles in many industrial processes.

What are the conditions necessary for chemical equilibrium?

Specially when any of the reactants or products is present in gas phase Therefore the important condition for equilibrium is closed vessel from which reactant and products cannot be escaped. 4; chemical equilibrium establish when the condition i.e temperature and pressure remain constant.

What are the factors affecting chemical equilibrium?

Changes in concentration, temperature, and pressure can affect the position of equilibrium of a reversible reaction. Chemical reactions are equilibrium reactions. Equilibrium occurs when a certain proportion of a mixture exists as reactants and the rest exits as products.

Why does chemical equilibrium occur?


Chemical equilibrium occurs when a reversible reaction is occurring backwards and forwards at the same time by the same amount. When the rates are equal, equilibrium has occurred. The reaction appears to have stopped, and the total amount of products and reactants remains stable.

What do you mean by dynamic equilibrium?

A dynamic equilibrium is a chemical equilibrium between a forward reaction and the reverse reaction where the rate of the reactions are equal. At this point, the ratio between reactants and products remains unchanged over time. Physical Chemistry (8th.

What happens equilibrium?

Equilibrium occurs when there is a constant ratio between the concentration of the reactants and the products. Different reactions have different equilibria. A reaction may look "finished" when equilibrium is reached, but actually the forward and reverse reactions continue to happen at the same rate.

What is an example of a chemical equilibrium?

A reaction is in chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction. There are many examples of chemical equilibrium all around you. One example is a bottle of fizzy cooldrink. In the bottle there is carbon dioxide (( ext{CO}_{2})) dissolved in the liquid.

What is the law of equilibrium?

The equilibrium law states that the concentrations of the products multiplied together, divided by the concentration of the reactants multiplied together, equal an equilibrium constant (K).

What are the 4 types of equilibrium?


There are three types of equilibrium: stable, unstable, and neutral. Figures throughout this module illustrate various examples.

What are the types of chemical reactions?

The main four types of reactions are direct combination, analysis reaction, single displacement, and double displacement. If you're asked the five main types of reactions, it is these four and then either acid-base or redox (depending who you ask).

What is physical and chemical equilibrium?

A physical equilibrium is an equilibrium state in which the physical state of the system does not change. Chemical equilibrium is the equilibrium state in which the concentrations of reactants and products is not changed with time. Nature.

What are the two important defining characteristics of a dynamic equilibrium?

(a) The concentration (or pressure) of reactants and products remains constant (or unchanged) over time. (b) The rate of forward reaction is equal to the rate of reverse reaction (both forward and reverse reaction proceed at an equal rate). (c) Reaction quotient (Q) is equal to the equilibrium constant (K).

What are the characteristics of dynamic equilibrium?

Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction. These equations are dynamic because the forward and reverse reactions are still occurring, but the two rates are equal and unchanging, so they're also at equilibrium.

What is meant catalyst?


A catalyst is a substance that speeds up a chemical reaction, but is not consumed by the reaction; hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up, or catalyze.

How do you determine if a system is at equilibrium?

Q can be used to determine which direction a reaction will shift to reach equilibrium. If K > Q, a reaction will proceed forward, converting reactants into products. If K < Q, the reaction will proceed in the reverse direction, converting products into reactants. If Q = K then the system is already at equilibrium.

Which is not a characteristic of chemical equilibrium?

The point that reactions go to completion is not a characteristic of chemical equilibrium. Characteristics of equilibrium include; they occur in reversible reactions, there is no net change in concentrations of reactants and products, and also the forward and reverse rates are the same.