The formula to calculate the ionic strength is:
\[ \text{I} = 0.5 \sum (c_i z_i^2) \]
Where:
Let's consider an example:
Using the formula to calculate the ionic strength:
\[ \text{I} = 0.5 \times (0.1 \times 2^2) = 0.5 \times (0.1 \times 4) = 0.5 \times 0.4 = 0.2 \]
This demonstrates that with a concentration of 0.1 mol/L and a charge of 2, the ionic strength is 0.2. ✅