Fig. 1: The effects of pressure, temperature, and salinity on sea water (SW) and deionized water (DW) pH.

a pH changes versus pressure at a constant temperature of 298 K; b pH changes versus temperature at a constant pressure of 100 atm; c pH changes versus salinity at a constant pressure of 100 atm and temperature of 298 K. A ± 5% error margin was considered in plotting the presented charts.