H2O + 0.4 mM   KOH
+ atmospheric CO2   (pCO2 = 3.408)

pH = 7.82

  (at 25 °C)
Electrical conductivity:   46.7 µS/cm   (info)
Ionic strength:   0.401 mmol/L   (info)
Alkalinity:   0.4 meq/L   (info)
Total hardness:   0.0 meq/L   (info)
Carbonate hardness:   0.4 meq/L   (info)
Redox potential (Eh):   -122 mV  



Elements   (in mM)

C(4) DIC 4.11e-01
K K 4.00e-01

Aqueous Species   (in mM)

H+ 1.56e-05
OH- 6.71e-04
CO2 1.33e-02
HCO3- 3.97e-01
CO3-2 1.31e-03
KOH 8.89e-08
K+ 4.00e-01
H2 2.23e-12

Minerals   (Ksp values)

Mineral Formula SI Saturation state
K2CO3:1.5H2O K2CO3:1.5H2O -15.79 under-saturated
KMetal K -50.80 under-saturated

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