H2O + 1.0 mM   NaHS

pH = 10.76

    (at 25 °C)
Electrical conductivity:   164.0  µS/cm   (info)
Ionic strength:   1.2  mmol/L   (info)
Alkalinity:   1.0  meq/L   (info)
Total hardness:   0.0  meq/L   (info)
Carbonate hardness:   1.0  meq/L   (info)
Redox potential (Eh):   -638  mV  

Elements   (in mM)
Na Na 1.00e+00
S S 1.00e+00
S(-2) Sulfide 1.00e+00
Aqueous Species   (in mM)
H+ 1.82e-08
OH- 5.94e-01
NaOH 9.76e-05
Na+ 1.00e+00
H2S 8.73e-07
HS- 5.92e-03
S-2 4.58e-05
H2 7.94e-01
Minerals   (Ksp values)
Mineral Formula SI Saturation state
Thenardite Na2SO4 -34.07 under-saturated
Mirabilite Na2SO4:10H2O -33.27 under-saturated
Sulfur S -13.94 under-saturated
NaMetal Na -38.09 under-saturated

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