Construction of a Sillien diagram involves several steps that are hard to follow from a textbook. This screencast goes through the steps of solving Example 18.5 from the Elliott and Lira textbook using the Sillen diagram. The problem asks for the pH of a solution that is 0.01 M NaOAc.

The Sillen diagram lines are quite different compared to a dissolved acid when another phase is present as a 'reservoir'. This can occur in a liquid solution in equilibrium with a gas phase at a fixed partial pressure, or also for a liquid solution saturated with solid.

A template for notes is also provided with many of the equations. Click here.

Example 18.4 is solved numerically using equations. However, visualization of the equilibria will be helpful in understanding how pH affects the speciation. In this screencast, the Sillen diagram is created. This example demonstrates several useful hints for creating Sillen diagrams.

## Comments

Lira replied on Permalink

## Sillen Diagram for Electrolyte Calculations (10:14) (msu.edu)

Sillen Diagram for Electrolyte Calculations (10:14) (msu.edu)

Construction of a Sillien diagram involves several steps that are hard to follow from a textbook. This screencast goes through the steps of solving Example 18.5 from the Elliott and Lira textbook using the Sillen diagram. The problem asks for the pH of a solution that is 0.01 M NaOAc.

Lira replied on Permalink

## Sillen Diagram for CO2 at fixed partial pressure (9:22)

Sillen Diagram for CO2 at fixed partial pressure (9:22) (msu.edu)

The Sillen diagram lines are quite different compared to a dissolved acid when another phase is present as a 'reservoir'. This can occur in a liquid solution in equilibrium with a gas phase at a fixed partial pressure, or also for a liquid solution saturated with solid.

A template for notes is also provided with many of the equations. Click here.

Lira replied on Permalink

## Fluconazole Equilibria (7:04) (msu.edu)

Fluconazole Equilibria (7:04) (msu.edu)

Example 18.4 is solved numerically using equations. However, visualization of the equilibria will be helpful in understanding how pH affects the speciation. In this screencast, the Sillen diagram is created. This example demonstrates several useful hints for creating Sillen diagrams.