H2O + 0.1 mM   CaCO3

pH = 9.85

  (at 25 °C)
Electrical conductivity:   31.7 µS/cm   (info)
Ionic strength:   0.314 mmol/L   (info)
Alkalinity:   0.2 meq/L   (info)
Total hardness:   0.2 meq/L   (info)
Carbonate hardness:   0.2 meq/L   (info)
Redox potential (Eh):   474 mV  



Elements   (in mM)

C(4) DIC 1.00e-01
Ca Ca 1.00e-01
O(0) O(0) 4.63e-12

Aqueous Species   (in mM)

H+ 1.46e-07
OH- 7.15e-02
CO2 2.25e-05
HCO3- 7.15e-02
CO3-2 2.50e-02
Ca+2 9.64e-02
CaCO3 3.43e-03
CaHCO3+ 8.11e-05
CaOH+ 1.05e-04
O2 2.31e-12

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Calcite CaCO3 -0.21 under-saturated
Portlandite Ca(OH)2 -7.16 under-saturated
Aragonite CaCO3 -0.35 under-saturated
Vaterite CaCO3 -0.78 under-saturated
CaCO3(a) CaCO3 -2.29 under-saturated
Ikaite CaCO3:6H2O -2.07 under-saturated

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