Molar Thermodynamic Properties of Aqueous Solutes

James Richard Fromm


Formula DH0f DG0f S0 Cop
kJ/mol kJ/mol J/K mol J/K mol
Ag+ 105.579 77.107 72.68 21.8
AgCl2- -245.2 -215.4 231.4 ---
Ag(NH3)++ -111.29 -17.12 245.2 ---
Al+++ -531.0 -485.0 -321.7 ---
Ba++ -537.64 -560.77 9.6 ---
Bi+++ --- 82.8 --- ---
Br- -121.55 -103.96 82.4 -141.8
Br3- -130.42 -107.05 215.5 ---
BrO3- -67.07 18.60 161.71 ---
Ca++ -542.83 -553.58 -53.1 ---
Cd++ -75.90 -77.612 -73.2 ---
Cd(CN)4-- 428.0 507.6 322.0 ---
Cd(NH3)4++ -450.2 -226.1 336.4 ---
Ce+++ -696.2 -672.0 -205.0 ---
Ce++++ -537.2 -503.8 -301.0 ---
CH3COO- -486.01 -369.31 -6.3 86.6
CH3COOH -485.76 -396.46 178.7 ---
CH3NH2 -70.17 20.77 123.4 ---
CH3NH3+ -124.93 -39.86 142.7 ---
CN- 150.6 172.4 94.1 ---
CNS- 76.44 92.71 144.3 -40.2
Cl- -167.159 -131.228 56.5 -136.4
Cl3- --- -120.4 --- ---
ClO4- -129.33 -8.52 182.0 ---
CO2 -412.80 -385.98 117.6 ---
CO3-- -677.14 -527.81 -56.9 ---
C2O4-- -825.1 -673.9 45.6 ---
Co++ -58.2 -54.4 -113.0 ---
Co+++ 92.0 134.0 -305.0 ---
Co(NH3)6+++ -584.9 -157.0 146.0 ---
CrO4-- -881.15 -727.75 50.21 ---
Cr2O7-- -149.03 -1301.1 261.9 ---
Cu+ 71.67 49.98 40.6 ---
Cu++ 64.77 65.49 -99.6 ---
Cu(CN)3-- --- 403.8 --- ---
Cu(CN)4--- --- 566.6 --- ---
Cu(NH3)4++ -348.5 -111.07 273.6 ---
F- -332.63 -278.79 -13.8 -106.7
Fe++ -89.1 -78.90 -137.7 ---
Fe+++ -48.5 -4.7 -315.9 ---
Fe(CN)6--- 561.9 729.4 270.3 ---
Fe(CN)6---- 455.6 695.08 95.0 ---
Fe(CNS)++ 23.4 71.1 -130.0 ---
H2 -4.2 17.6 57.7 ---
H+ 0.0 0.0 0.0 0.0
H2O2 -191.17 -134.03 143.9 ---
HNO2 -119.2 -50.6 135.6 ---
H3AsO3 -742.2 -639.80 195.0 ---
H3AsO4 -902.5 -766.0 184.0 ---
HS- -17.6 12.08 62.8 ---
H2SO3 -608.81 -537.81 232.2 ---
He -1.7 19.7 54.4 ---
Hg++ 171.1 164.40 -32.2 ---
Hg2++ 172.4 153.52 84.5 ---
Hg(CN)4-- 526.3 618.5 305.0 ---
Hg(CNS)4-- 326.4 411.4 456.0 ---
HgCl4-- -554.0 -446.8 293.0 ---
HgI4-- -235.1 -211.7 360.0 ---
I2 22.6 16.40 137.2 ---
I- -55.19 -51.57 111.3 -142.3
I3- -51.5 -51.4 239.3 ---
IO3- -221.3 -128.0 118.4 ---
K+ -252.38 -283.27 102.5 21.8
Mg++ -466.85 -454.8 -138.1 ---
Mn++ -220.75 -228.1 -73.6 50.0
MnO4- -541.4 -447.2 191.2 -82.0
NH3 -80.29 -26.50 111.3 ---
NH4+ -132.51 -79.31 113.4 79.9
NO3- -205.0 -108.74 146.4 -86.6
Na+ -240.12 -261.905 59.0 46.4
Ni++ -54.0 -45.6 -128.9 ---
Ni(CN)4-- 367.8 472.1 218.0 ---
Ni(NH3)4++ -438.9 --- 258.6 ---
Ni(NH3)6++ -630.1 -255.7 394.6 ---
OH- -229.994 -157.244 -10.75 -148.5
PO4--- -1277.4 -1018.7 -222.0 ---
Pb++ -1.7 -24.43 10.5 ---
Pb(OH)3- --- -575.6 --- ---
O2 -11.7 16.4 110.9 ---
S-- 33.1 85.8 -14.6 ---
SO4-- -909.27 -744.53 20.1 ---
S2O3-- -648.6 -522.5 67.0 ---
S4O6-- -1224.2 -1040.4 257.3 -67.8
Sn++ -8.8 -27.2 -17.0 ---
Sn++++ 30.5 2.5 -117.0 ---
Sr++ -545.80 -559.48 -32.6 ---
Tl+ 5.36 -32.40 125.5 ---
Tl+++ 196.6 214.6 -192.0 ---
U++++ -591.2 -531.0 -410.0 ---
UO2++ -1019.6 -953.5 -97.5 ---
Zn++ -153.89 -147.06 -112.1 46.0
Zn(CN)4-- 342.3 446.9 226.0 ---
Zn(NH3)4++ -533.5 -301.9 301.0 ---
Zn(OH)4-- --- -858.52 --- ---

Main Tables

Auxiliary Tables


Notes: These standard molar values apply to (infinitely) dilute aqueous solutes at 25oC and exactly 100 kPa (1.0 bar) pressure. One standard atmosphere pressure is slightly higher, 101.325 kPa, but the change in tabulated values between these two pressures is negligible for all solids, liquids, and ions. It is minor even for gases. Values are taken from U.S.N.B.S. tables of molar thermodynamic properties (J. Phys. Chem. Ref. Data 11, Suppl. 2 (1982)) unless in italics.


Copyright 1997 James R. Fromm