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equilibrium law

equilibrium law

7.7
A chemistry rule that the forward and backward reaction speeds have a fixed ratio at equilibrium
  • noun
  • /ˌiːkwɪˈlɪbriəm lɔː/
  • Specialized
translation icon : ley de equilibrio
  • In a closed system, the equilibrium law helps predict the concentrations of reactants and products at equilibrium.

Examples

  • The equilibrium law states that at constant temperature, the rates of a forward and reverse chemical reaction remain balanced.

  • So this is not yet the equilibrium law of mass action.

  • According to the equilibrium law, the constant ratio of the reaction rates defines the balance in a reversible chemical reaction.

Synonyms

law of chemical equilibrium
vsequilibrium law
  • Specialized
6.5

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

is the shorter label used as a compact name for the same principle

Surface Forms

Morphology

equilibrium + law

The phrase is compositionally built from 'equilibrium' (a state in which concentrations remain constant) plus 'law' (a scientific generalization), so a B1 learner who knows both words would infer it denotes a scientific rule or principle concerning equilibrium. Although the full technical formulation (ratio of forward/reverse rates) is specialized, the basic meaning is directly derivable and follows common cross-linguistic noun–noun composition patterns.

Etymology

Equilibrium law gives a simple picture: equilibrium is like a balance and law is a 'rule' that explains how things stay steady. So, it says the speeds of the forward and reverse reactions settle into a constant ratio when the reaction is in 'balance', and that is why chemists use it to predict the amounts of substances at equilibrium.