H2O + 0.0999 mM   CaCO3
+ 2.2 mM   Na2CO3

pH = 10.69

  (at 25 °C)
Electrical conductivity:   530.5 µS/cm   (info)
Ionic strength:   5.894 mmol/L   (info)
Alkalinity:   4.419 meq/L   (info)
Total hardness:   0.019 meq/L   (info)
Carbonate hardness:   4.419 meq/L   (info)
Redox potential (Eh):   420 mV  

NOTE:   One  mineral  precipitates.


Elements   (in mM)

C(4) DIC 2.21e+00
Ca Ca 9.56e-03
Na Na 4.40e+00
O(0) O(0) 2.60e-12

Aqueous Species   (in mM)

H+ 2.18e-08
OH- 5.37e-01
CO2 2.25e-05
HCO3- 5.36e-01
CO3-2 1.57e+00
Ca+2 3.97e-03
CaCO3 5.54e-03
CaHCO3+ 1.97e-05
CaOH+ 2.56e-05
NaOH 3.49e-04
Na+ 4.31e+00
NaHCO3 1.10e-03
NaCO3- 9.18e-02
O2 1.30e-12

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Calcite CaCO3 0.00 9.04e-02 mM  precipitates
Portlandite Ca(OH)2 -6.95 under-saturated
Nahcolite NaHCO3 -5.16 under-saturated
Trona NaHCO3:Na2CO3:2H2O -12.65 under-saturated
Natron Na2CO3:10H2O -6.43 under-saturated
Thermonatrite Na2CO3:H2O -7.87 under-saturated
Aragonite CaCO3 -0.14 under-saturated
Vaterite CaCO3 -0.57 under-saturated
CaCO3(a) CaCO3 -2.08 under-saturated
Ikaite CaCO3:6H2O -1.86 under-saturated
NaMetal Na -55.36 under-saturated

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