H2O + 1.4 mM   HCl
+ 50.0 mM   H3PO4
+ 80.0 mM   NaOH
+ atmospheric CO2   (pCO2 = 3.408)

pH = 6.96

  (at 25 °C)
Electrical conductivity:   5258.4 µS/cm   (info)
Ionic strength:   105.519 mmol/L   (info)
Alkalinity:   28.559 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   28.559 meq/L   (info)
Redox potential (Eh):   641 mV  



Elements   (in mM)

C(4) DIC 8.41e-02
Na Na 7.99e+01
Cl Cl 1.40e+00
P P 4.99e+01
O(0) O(0) 2.56e-12

Aqueous Species   (in mM)

H+ 1.32e-04
OH- 1.21e-04
CO2 1.30e-02
HCO3- 6.92e-02
CO3-2 6.16e-05
NaOH 9.98e-07
Na+ 7.85e+01
NaHCO3 1.82e-03
NaCO3- 3.40e-05
NaHPO4- 1.43e+00
Cl- 1.40e+00
H3PO4 2.50e-04
H2PO4- 2.14e+01
HPO4-2 2.71e+01
PO4-3 4.25e-04
O2 1.28e-12

Minerals   (Ksp values)

Mineral Formula SI Saturation state
Halite NaCl -5.77 under-saturated
Nahcolite NaHCO3 -4.93 under-saturated
Trona NaHCO3:Na2CO3:2H2O -14.74 under-saturated
Natron Na2CO3:10H2O -8.76 under-saturated
Thermonatrite Na2CO3:H2O -10.18 under-saturated
Na3PO4(cr) Na3PO4 -15.01 under-saturated
NaMetal Na -57.90 under-saturated

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