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Debye-Huckel Calculator
Debye-Huckel Calculator
Calculate activity coefficients from ionic strength
Model
Limiting Law (very dilute, I < 0.001 M)
Extended Law (I < 0.1 M)
Davies Equation (I < 0.5 M)
Ionic Strength, I (M)
Ion Charge (z)
+1 or -1
+2 or -2
+3 or -3
Ion Size (Angstroms)
Temperature (K)
Dielectric Constant
Typical Ion Sizes
Ion
Size (A)
H+
9
Na+, K+, Cl-
3
Ca2+, Mg2+
6
SO4(2-)
4
