Fesolubilityxaxis.ppi

SPECIATION
  calculationType                      custom
  calculationMethod                    1
  xmin                                 2
  xmax                                 12
  resolution                           100
PLOT
  plotTitle                            "Fe(OH)3(a) solubility vs pH<br>(using a x_axis tag)"
  xtitle                               pH
  ytitle                               "log<sub>10</sub> Fe<sub>T</sub> (mol/kgw)"
  pymax                                0
  customXColumn                        pH                  # pH is defined as a column heading below
  lines                                FeT                 # FeT is defined as a column heading below
  linecolor                            blue
  useLineColorDictionary               0                   # 0 = use the ‘randomly’ selected colours generated by PhreePlot
  legendTextSize                       0                   # omit legend
  labelSize                            0                   # omit label

CHEMISTRY

PHASES
Fix_H+; H+ = H+; log_k 0

SELECTED_OUTPUT
  reset FALSE

USER_PUNCH
  headings pH FeT
10 PUNCH -la("H+"), log10(TOT("Fe"))

SOLUTION 1
   pH        1.8
   units     mol/kgw
   Fe(3)     1e-1
   Na        1e-1
   F         1e-1
END

USE solution 1
EQUILIBRIUM_PHASES 1
   Fix_H+ -<x_axis> NaOH 10
     -force_equality true
   O2(g)  -0.677
   Fe(OH)3(a) 0 0
END