Reversible Reaction Calculator

Calculate Chemical Equilibrium Parameters

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Equilibrium Constant Calculator

Calculate the equilibrium constant (Keq) from equilibrium concentrations.

Equilibrium Constant: -

Reaction Quotient Calculator

Calculate the reaction quotient (Q) and determine reaction direction.

Reaction Quotient: -
Reaction Direction: -

Equilibrium Concentration Calculator

Calculate equilibrium concentrations from initial conditions and Keq.

Product Concentration: - M
Reactant Concentration: - M

Understanding Reversible Reactions

Chemical Equilibrium

Chemical equilibrium occurs when:

  • Forward and reverse rates are equal
  • Concentrations remain constant
  • System is dynamic at molecular level
  • Temperature and pressure are constant

Equilibrium Constant

The equilibrium constant (Keq) indicates:

  • Relative amounts of products and reactants
  • Direction of spontaneous reaction
  • Extent of reaction completion
  • Temperature dependence of equilibrium

Le Chatelier's Principle

System responds to disturbances by:

  • Shifting to oppose concentration changes
  • Adjusting to temperature changes
  • Responding to pressure changes
  • Maintaining dynamic equilibrium

Applications

Understanding reversible reactions is crucial for:

  • Industrial process optimization
  • Pharmaceutical synthesis
  • Environmental chemistry
  • Biological systems

Essential Equilibrium Formulas

Equilibrium Constant

Keq = [Products]^n/[Reactants]^m

Where n and m are stoichiometric coefficients

Reaction Quotient

Q = [Products]^n/[Reactants]^m at any time

Compare Q with Keq to determine reaction direction

ICE Table Analysis

Initial → Change → Equilibrium

Used to solve equilibrium problems systematically