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equilibrium

equilibrium

20 7.4
A state in a chemical reaction when the forward and backward reactions happen at the same speed
  • noun
  • /ˌiːkwɪˈlɪbriəm/
  • Specialized
translation icon : equilibrio químico
  • During the experiment, the system reached equilibrium when the rate of the forward reaction equaled the rate of the reverse reaction.
  • monetary equilibrium
  • thermodynamic equilibrium
  • hydrostatic equilibrium

Examples

  • The chemical reaction achieved equilibrium after several minutes, resulting in stable concentrations of the reactants and products.

  • So now we're thinking about equilibrium in terms of rates.

  • So how do you describe now the whole equilibrium conditions?

  • So free energy determines what equilibrium is, what can happen, right?

  • And the shell also has an equilibrium reaction that happens.

  • The market is initially in equilibrium with output Q* and price P*.

    Academic text (1992)
  • Real-world market prices are not the equilibrium prices of standard economic theory.

    Academic text (1999)
  • The solution has dissolved oxygen in equilibrium with air and requires an immersion time of less than 10 minutes.

    Academic text (1998)
  • If light is allowed to impinge on a pen junction device, the equilibrium conditions of the device are disturbed.

    Academic text (1993)
  • Each plank must reach its equilibrium moisture content, a measure of moisture content per pound.

    Academic text (1994)

Synonyms

chemical equilibrium
vsequilibrium
  • Specialized
1 5.1

A state in a reaction where forward and reverse reactions happen equally so amounts stay constant

is expressed without the explicit chemistry label in the term

Antonyms

86 4.2

When different parts are not equal in amount or power

disequilibrium
  • Specialized
1 8.6

A lack of balance in a body or system that makes it unsteady

Compounds

chemical equilibrium
  • Specialized
1 5.1

A state in a reaction where forward and reverse reactions happen equally so amounts stay constant

1 9.2

A theory that species change quickly in short bursts and then stay the same for long periods

Nash equilibrium
  • Specialized
1 9.4

A situation where no player can gain by changing only their own choice while others keep theirs the same

thermal equilibrium
  • Specialized
1 6.4

A state where all parts have the same temperature and no heat flows between them

equilibrium constant
  • Specialized
5.5

A number showing the amount of products compared with reactants when a chemical reaction stops changing

equilibrium law
  • Specialized
7.7

A chemistry rule that the forward and backward reaction speeds have a fixed ratio at equilibrium

acid-base equilibrium
  • Specialized
4.8

A balance of acids and bases in the body that keeps it working

6.5

A rule that in a reversible chemical reaction the forward and reverse reactions happen at the same rate at equilibrium

sense of equilibrium
  • Specialized
6.0

Parts of the inner ear that tell you your head position and keep you balanced

Long periods of little change followed by short, fast bursts of new species forming

Study of how heat and energy behave in systems that have the same temperature

How Balanced

equilibrium
  • Specialized
20 7.4
nonequilibrium
  • Specialized
7.9

Surface Forms

equilibrium singular
equilibriums plural

Morphology

equilibrium = equal + libra (opaque) = equi + libra

Though 'equal' and 'libra' are etymologically related, their combination in 'equilibrium' is not transparent to learners.

Etymology

Equilibrium comes from the Latin parts aequus 'equal' and libra 'scales', like the zodiac Libra. So in chemistry a reaction at equilibrium is like scales that stay level because the forward and backward actions are equal.