Table 5: Selected hydration enthalpies of common biologically relevant ions [89].

Symbol (kJ mol−1)Source

−312[198]
K+−321[197]
−329[198]
−368[198]
Cl−371[197]
−384[198]
Na+−413[197]
OH−520[198]
−522[198]
−1035[198]
H+−1100[197]
Ca2+−1650[197]
Mg2+−1920[197]
Mg2+−1949[198]
Al3+−4690[197]