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Equilibrium

Equilibrium Expression

sqaure brackets indicate the concentrations of the chemical species at equilibrium

each concentration is raised to a power corresponding to its coefficient in the balanced equation

only consists of reactants and products in gaseous phase

Equilibrium

Collision Model

  • Implies BALANCE or STEADINESS
  • RATE of the reactants breaking = RATE of products forming

Activation Energy

DEF: the idea that molecules must collide in order to react

DEF: the threshold energy that must be overcome to produce a chemical reaction

Chemical Equilibrium

DEF: a dynamic state where the concentrations of all reactants and products remain constant

Catalyst

Enzyme

a large molecule, usually protein, that catalyzes biological reactions

DEF: a substance that speeds up a reaction without being consumed

Equilibrium Position

each set of equilibrium concentrations

-there is only one equilibrium constant but infinite number of

equilibrium positions

K<1 position lies to the left

K>1 position lies to the right

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