H2O + 1.0 mM   Na2CO3

pH = 10.52

  (at 25 °C)
Electrical conductivity:   260.7 µS/cm   (info)
Ionic strength:   2.614 mmol/L   (info)
Alkalinity:   2.0 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   2.0 meq/L   (info)
Redox potential (Eh):   429 mV  



Elements   (in mM)

C(4) DIC 1.00e+00
Na Na 2.00e+00
O(0) O(0) 1.89e-12

Aqueous Species   (in mM)

H+ 3.20e-08
OH- 3.48e-01
CO2 2.25e-05
HCO3- 3.48e-01
CO3-2 6.33e-01
NaOH 1.10e-04
Na+ 1.98e+00
NaHCO3 3.47e-04
NaCO3- 1.87e-02
O2 9.43e-13

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Nahcolite NaHCO3 -5.66 under-saturated
Trona NaHCO3:Na2CO3:2H2O -14.16 under-saturated
Natron Na2CO3:10H2O -7.44 under-saturated
Thermonatrite Na2CO3:H2O -8.87 under-saturated
NaMetal Na -55.83 under-saturated

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