H2O + 5.0 mM   NaOH
+ 5.0 mM   NaCl

pH = 11.65

    (at 25 °C)
Electrical conductivity:   1755.2  µS/cm   (info)
Ionic strength:   9.993  mmol/L   (info)
Alkalinity:   5.0  meq/L   (info)
Total hardness:   0.0  meq/L   (info)
Carbonate hardness:   5.0  meq/L   (info)
Redox potential (Eh):   370  mV  

Elements   (in mM)
Na Na 1.00e+01
Cl Cl 5.00e+00
O(0) O(0) 6.60e-12
Aqueous Species   (in mM)
H+ 2.44e-09
OH- 4.99e+00
NaOH 7.21e-03
Na+ 9.99e+00
Cl- 5.00e+00
O2 3.30e-12
Minerals   (Ksp values)
Mineral Formula SI Saturation state
Halite NaCl -5.97 under-saturated
NaMetal Na -54.14 under-saturated

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