Stedman's > equilibrium constant

equilibrium constant

in the reaction A + B ⇄ C + D at equilibrium (no net change in concentrations of A, B, C, or D), the concentrations of the four components are related by the equation K_eq = [C][D]/[A][B]; K_eq is the equilibrium constant If any component in the reaction has a multiplier (H₂ ⇄ 2H), that multiplier appears as an exponent in the calculation of K (K_eq = [H]2/[H₂]). When this equation is applied to the ionization of a substance in solution, K_eq is called the dissociation constant (K_d) and its negative logarithm (base 10) is the pK_d.

See Also: Henderson-Hasselbalch equation, mass:action ratio

 

 

 

 

 

 

 

 

 

 

 

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