H2O + 0.1019 mM   NaHSO4
+ 3.699 mM   Na2SO4
+ atmospheric CO2   (pCO2 = 3.408)

pH = 4.13

  (at 25 °C)
Electrical conductivity:   874.8 µS/cm   (info)
Ionic strength:   11.185 mmol/L   (info)
Alkalinity:   -0.102 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   0.0 meq/L   (info)
Redox potential (Eh):   114 mV  



Elements   (in mM)

C(4) DIC 1.34e-02
Na Na 7.50e+00
S S 3.80e+00
S(6) Sulfate 3.80e+00
S(4) Sulfite 6.49e-13
S(-2) Sulfide 2.61e-16

Aqueous Species   (in mM)

H+ 8.24e-02
OH- 1.49e-07
CO2 1.33e-02
HCO3- 8.76e-05
CO3-2 7.50e-11
NaOH 1.58e-10
Na+ 7.41e+00
NaHCO3 2.95e-07
NaCO3- 6.80e-12
NaSO4- 8.95e-02
HSO4- 1.96e-02
SO4-2 3.69e+00
H2S 2.60e-16
H2SO3 3.15e-15
HSO3- 6.45e-13
SO3-2 8.02e-16
H2 5.74e-13

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Thenardite Na2SO4 -6.61 under-saturated
Mirabilite Na2SO4:10H2O -5.82 under-saturated
Nahcolite NaHCO3 -8.73 under-saturated
Trona NaHCO3:Na2CO3:2H2O -26.14 under-saturated
Natron Na2CO3:10H2O -16.35 under-saturated
Thermonatrite Na2CO3:H2O -17.78 under-saturated
Sulfur S -11.33 under-saturated
NaMetal Na -49.95 under-saturated

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