Free Ionic Strength Calculator
Calculate the ionic strength of a solution from concentrations and charges of two ionic species.
M
M
Ionic Strength
0.3000 M
Ionic Strength vs Concentration of Ion 1
How to Calculate Ionic Strength
Formula
I = 0.5 × Sum(c_i × z_i^2)
Ionic strength measures total charge concentration and affects activity coefficients.
Example Calculation
0.1 M CaCl2: 0.1 M Ca2+ and 0.2 M Cl-.
- 01I = 0.5 × (0.1 × 4 + 0.2 × 1)
- 02I = 0.5 × (0.4 + 0.2)
- 03I = 0.3 M
Frequently Asked Questions
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