Medical Term:

ionic strength

 

Definition: symbolized as Γ/2 or I and set equal to 0.5Σmizi2, where mi equals the molal concentration and zi the charge of each ion present in solution; if molar concentrations (ci) are used instead of molality (and the solution is dilute), then I = 0.5(1/ρocizi2 where ρo is the density of the solvent; a number of biochemically important events (protein solubility and rates of enzyme action) vary with the ionic strength of a solution.

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