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Two-Ion Ionic Strength Calculator — result sheet
Calculate ionic strength for a two-species solution from concentrations and charge numbers.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: I = 1/2 Σ cᵢzᵢ² = 1/2(c₁z₁²+c₂z₂²).
The calculator applies the charge-squared weighting directly and leaves electroneutrality as a visible chemistry responsibility.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Species 1 concentration — mol/L; minimum 0; maximum 1000000
- Species 1 charge — minimum -1000; maximum 1000
- Species 2 concentration — mol/L; minimum 0; maximum 1000000
- Species 2 charge — minimum -1000; maximum 1000
Worked example
| Input | Value |
|---|---|
| Species 1 concentration | 0.1 |
| Species 1 charge | 1 |
| Species 2 concentration | 0.1 |
| Species 2 charge | -1 |
Ionic strength = 0.1 mol/L.
Assumptions and limits
- Concentrations are nonnegative molar values and charges are finite signed integers or charge numbers.
- Only the two entered ionic species contribute to the model.
- Activity corrections, solvent effects, complexes, and electroneutrality checks are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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