Lexic.us

Definition of Dissociation constant

1. Noun. The equilibrium constant for a reversible dissociation.

Medical Definition of Dissociation constant

1. In a chemical equilibrium of form A + B = AB, the equilibrium concentrations (strictly, activities) of the reactants are related such that A x B/AB = a constant, Kd, the dissociation constant, that in this simplest case has the dimensions of concentration. When A is H, this is the acid dissociation constant often designated Ka and expressed as pKa (log10Ka). This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Dissociation Constant

Literary usage of Dissociation constant

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1915)
"Veley to his determination of the second dissociation constant on measu colorimetrically the degree of hydrolysis of cinchonine ..."

2. Physiology and biochemistry in modern medicene by John James Rickard Macleod (1922)
"dissociation constant. — Notwithstanding these criticisms, it is of considerable practical importance to know that an equation exists from which the entire ..."

3. Manual of Physico-chemical Measurements by Wilhelm Ostwald (1894)
"The dissociation constant. — Moderately dissociated binary electrolytes, especially very many acids, show a variation of their molecular conductivity with ..."

4. Theoretical and Physical Chemistry by Samuel Lawrence Bigelow (1912)
"The dissociation constant and Chemical Constitution. The dissociation constant of formic acid is 0.0214, of acetic acid is 0.0018, of propionic acid is ..."

5. A Text-book of Electro-chemistry by Max Julius Louis Le Blanc (1907)
"R* B," The value of B," may be obtained with sufficient exactness from the equation, Calculation of the dissociation constant from Electrical Conductance. ..."

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