Chem.Eq.Diagr  Chemical Equilibrium Diagrams / Tutorials

Make your 1st Diagram with DATABASE & SPANA

Follow these simple steps:

1) Start DATABASE and click on “Fe” in the periodic table. Click on “Fe 2+” in the list of available components. Both “H+” and “Fe 2+” will be listed as selected components. Click on the pull-down menu “File / Search and Exit”. Click on the diagram button to save the data file and to make a diagram. Enter a file name, for example “IRON2”.

2) The SPANA main window will appear. Click on the pull-down menu “Run / Make a Diagram”. A new window appears to select what type of diagram is wanted. Click on the Diagram button in the upper-left corner of the window.

Diagr_Button

The calculations will be done by background program. When the calculations are finished the diagram is displayed in a window:

1st_Diagram

This logarithmic diagram shows the distribution of hydrolysis products of Fe(II) as a function of pH. Fe(OH)2(c) precipitates at pH>9.1

See additional tutorials.