Spana  SPANA / Modify Chem. System

A solubility diagram showing the total dissolved concentration of Aluminium (on a logarithmic scale) against H+. For a solubility diagram it is convenient to set the activity = 1 for the solid phase of interest, in this case AlOOH(cr). This is done by first exchanging a component for a reaction; in this case, exchanging Al3+ with AlOOH(cr).

Solubility diagram

This diagram was obtained with the following input file:

2 9 2 1
H+, AlOOH(cr)
Al(OH)2+,  -1.516  1 1 Al(OH)3,       -8.316  0  1
Al(OH)4-, -14.116 -1 1 Al13O4(OH)24+7,12.862  7 13
Al2(OH)2+4, 9.468  4 2 Al3(OH)4+5,    11.812  5  3
AlOH+2,     3.584  2 1 OH-,          -14.0   -1  0
Al+3,       8.584  3 1
Al(OH)3(am),-1.796 0 1 Al(OH)3(cr), 0.474 0 1
LS, -9 -1  H+
LAV, -3 -12  LA, 0