Ionic Activity Coefficient Calculator

Calculate Ionic Activity Coefficient









Formula

The formula to calculate the ionic activity coefficient is:

\[ \gamma = 10^{\left(-\frac{A \cdot z^2 \cdot \sqrt{I}}{1 + B \cdot d \cdot \sqrt{I}}\right)} \]

Where:

What is an Ionic Activity Coefficient?

The ionic activity coefficient is a factor used in chemistry to account for deviations from ideal behavior in a solution of ions. It quantifies the effective concentration of ions in a solution, considering interactions between ions that affect their activity. The coefficient is crucial for accurate calculations in various chemical processes, including reaction equilibria and electrochemistry. It helps in understanding how ions behave in real-world conditions, where ideal assumptions often do not hold.

Example Calculation

Let's assume the following values:

Using the formula:

\[ \gamma = 10^{\left(-\frac{0.5 \cdot 2^2 \cdot \sqrt{0.1}}{1 + 0.3 \cdot 0.5 \cdot \sqrt{0.1}}\right)} = 0.249 \]

The Ionic Activity Coefficient is 0.249.