Fraction diagram (H+,*Al(OH)3)

SED & PREDOM / Input data-file format / Names and Numbers / Deactivate species

Example of a diagram with a deactivated solid component:

first the component Al³⁺ has been exchanged with Al(OH)₃(cr).
then all solids except the amorphous Al-hydroxide have been deactivated by adding an asterisk (*) as the first character in the name. The components are therefore: H+ and *Al(OH)3(cr).

The diagram above shows that even if the solid component (Al(OH)₃(cr)) has been deactivated, all other aluminium species may be formed (unless they have been deactivated as well).

Remember that amorphous solids are more soluble than crystalline.

The diagram above was obtained with the following input file:

 2 8 3 1
H+,  *Al(OH)3(cr)
Al(OH)2+    , -3.04   1 1  Al(OH)3     , -7.76   0 1
Al(OH)4-    , -15.09 -1 1  Al2(OH)2 4+ ,  7.7    4 2
Al3(OH)4+5  ,  9.16   5 3  AlOH+2      ,  2.73   2 1
OH-         , -14    -1 0  Al 3+       ,  7.7    3 1
Al(OH)3(am) , -3.1    0 1  *Al2O3(cr)  , -4.25   0 2
*AlOOH(s)   , -0.7    0 1
*Al(OH)3(cr), H+,
LAV, -3 -11  T, 1E-3