H2O + 500.0 mM   Na2CO3
+ 45.0 mM   CaO

pH = 12.72

  (at 25 °C)
Electrical conductivity:   54122.5 µS/cm   (info)
Ionic strength:   793.604 mmol/L   (info)
Alkalinity:   1000.825 meq/L   (info)
Total hardness:   0.011 meq/L   (info)
Carbonate hardness:   1000.825 meq/L   (info)
Redox potential (Eh):   304 mV  

NOTE:   One  mineral  precipitates.


Elements   (in mM)

C(4) DIC 4.55e+02
Ca Ca 5.33e-03
Na Na 1.00e+03
O(0) O(0) 3.44e-12

Aqueous Species   (in mM)

H+ 2.55e-10
OH- 8.59e+01
CO2 3.72e-08
HCO3- 1.52e-01
CO3-2 1.26e+02
Ca+2 5.38e-04
CaCO3 4.62e-03
CaHCO3+ 2.52e-07
CaOH+ 1.65e-04
NaOH 4.31e+00
Na+ 6.67e+02
NaHCO3 2.25e-02
NaCO3- 3.29e+02
O2 1.72e-12

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Calcite CaCO3 0.00 4.50e+01 mM  precipitates
Portlandite Ca(OH)2 -4.26 under-saturated
Nahcolite NaHCO3 -3.77 under-saturated
Trona NaHCO3:Na2CO3:2H2O -5.80 under-saturated
Natron Na2CO3:10H2O -1.03 under-saturated
Thermonatrite Na2CO3:H2O -2.39 under-saturated
Aragonite CaCO3 -0.14 under-saturated
Vaterite CaCO3 -0.57 under-saturated
CaCO3(a) CaCO3 -2.08 under-saturated
Ikaite CaCO3:6H2O -1.91 under-saturated
NaMetal Na -51.31 under-saturated

Disclaimer:   The pH calculator has been tested with great care. Nevertheless, the results are provided without warranty.