H2O + 1.0 mM   Na2CO3
+ 8.0 mM   NaHCO3

pH = 9.24

  (at 25 °C)
Electrical conductivity:   908.5 µS/cm   (info)
Ionic strength:   10.74 mmol/L   (info)
Alkalinity:   10.0 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   10.0 meq/L   (info)
Redox potential (Eh):   529 mV  



Elements   (in mM)

C(4) DIC 9.00e+00
Na Na 1.00e+01
O(0) O(0) 9.05e-11

Aqueous Species   (in mM)

H+ 6.32e-07
OH- 1.94e-02
CO2 9.29e-03
HCO3- 7.97e+00
CO3-2 8.83e-01
NaOH 2.74e-05
Na+ 9.86e+00
NaHCO3 3.58e-02
NaCO3- 1.07e-01
O2 4.52e-11

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Nahcolite NaHCO3 -3.65 under-saturated
Trona NaHCO3:Na2CO3:2H2O -10.74 under-saturated
Natron Na2CO3:10H2O -6.03 under-saturated
Thermonatrite Na2CO3:H2O -7.46 under-saturated
NaMetal Na -56.85 under-saturated

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