Reaction equilibrium constant via standard Gibbs energy

The equilibrium constant is a value that determines for a given chemical reaction the ratio between thermodynamic activities (or, depending on the conditions of the reaction, partial pressures, concentrations or fugitives) of reactants and products in a state of chemical equilibrium.

Notation:

1. $R$ (R) is molar_gas_constant.

Conditions:

1. The term “standard” applies to a solution of an infinite dilution and of a hypothetical standard concentration, typically $1\text{mol}/\text{kg}$.

Links:

1. Wikipedia, derivable from the fifth equation.

equilibrium_constant

Equilibrium constant of the reaction.

Symbol:

K

Latex:

$K$

Dimension:

dimensionless

reaction_standard_gibbs_energy

Reaction standard gibbs_energy, which is the sum of the standard Gibbs energies of the reaction products minus that of reactants.

Symbol:

Delta(G)

Latex:

$\mathrm{\Delta }G$

Dimension:

energy/amount_of_substance

temperature

temperature of the system.

Symbol:

T

Latex:

$T$

Dimension:

temperature

law

K = exp(-Delta(G) / (R * T))

Latex:

$$K=\exp (-\frac{\mathrm{\Delta }G}{RT})$$