Reference Main

Element Listings
A through C
F through O
P through Z

Elements
Fluorine
Hydrogen
Iodine
Iron
Lead
Lithium
Magnesium
Mercury
Nickel
Nitrogen
Oxygen

Periodic Table of Elements

Constants and Variables

Vapor Pressure of Water

Ionization Energies, Electron Affinities, and Electronegativities

Ionization Constants for Weak Acids at 25º C

Ionization Constants for Weak Bases at 25º C

Standard Reduction Potentials

Thermodynamic Values (A-C)

Thermodynamic Values (F-O)

Thermodynamic Values (P-Z)

Bibliography



Taken from The NBS Tables of Chemical Thermodynamic Properites, 1982

Selected Thermodynamic Values

Fluorine through Oxygen
Species ΔHºf(298.15K)
kJ / mol 		Sº(298.15K)
J/K x mol 		ΔGºf(298.15K)
kJ / mol
Fluorine
F2(g) 0 202.78 0
F(g) 78.99 158.754 61.191
F-(g) -255.39 --- ---
F-(aq) -332.63 -13.8 -278.79
HF(g) -271.1 173.779 -273.2
HF(aq) -332.63 -13.8 -278.79
Hydrogen
H2(g) 0 130.684 0
H(g) 217.965 114.713 203.247
H+(g) 1536.202 --- ---
H2O(l) -285.830 69.91 -237.129
H2O(g) -241.818 188.825 -228.572
H2O2(l) -187.78 109.6 -120.35
Iodine
I2(s) 0 116.135 0
I2(g) 62.438 260.69 19.327
I(g) 106.838 180.791 70.250
I-(g) -197 --- ---
ICl(g) 17.78 247.551 -5.46
Iron
Fe(s) 0 27.78 0
FeO(s) -272 --- ---
Fe2O3(s, hematite) -824.2 87.40 -742.2
Fe3O4(s, magnetite) -1118.4 146.4 -1015.4
FeCl2(s) -341.79 117.95 -302.30
FeCl3(s) -399.49 142.3 -344.00
FeS2(s, pyrite) -178.2 52.93 -166.9
Fe(CO)5(l) -774.0 338.1 -705.3
Lead
Pb(s) 0 64.81 0
PbCl2(s) -359.41 136.0 -314.10
PbO(s, yellow) -317.32 68.70 -187.89
PbS(s) -100.4 91.2 -98.7
Lithium
Li(s) 0 29.12 0
Li+ 685.783 --- ---
LiOH(s) -484.93 42.80 -438.95
LiOH(aq) -508.48 2.80 -450.58
LiCl(s) -408.701 59.33 -384.37
Magnesium
Mg(s) 0 32.68 0
MgCl2 -641.32 89.62 -591.79
MgCO3(s) -1095.8 67.5 -1012.1
MgO(s) -601.70 26.94 -569.43
Mg(OH)2(s) -924.54 63.18 833.51
MgS(s) -346.0 50.33 -341.8
Mercury
Hg(l) 0 76.02 0
HgCl2(s) -224.3 146.0 178.6
HgO(s, red) -90.83 70.29 -58.539
HgS(s, red) -58.2 82.4 -50.6
Nickel
Ni(s) 0 29.87 0
NiO(s) -239.7 37.99 -211.7
NiCl2(s) -305.332 97.65 -259.032
Nitrogen
N2(g) 0 191.61 0
N(g) 472.704 153.298 455.563
NH3(g) -46.11 192.45 -16.45
N2H4(l) 50.63 121.21 149.34
NH4Cl(s) -314.43 94.6 -202.87
NH4Cl(aq) -299.66 169.9 -210.52
NH4NO3(s) -365.56 151.88 -183.87
NH4NO3(aq) -339.87 259.8 -190.56
NO(g) 90.25 210.76 86.55
NO2(g) 33.18 240.06 51.31
N2O(g) 82.05 219.85 104.20
N2O4(g) 19.16 304.29 97.89
NOCl(g) 51.71 261.69 66.08
HNO3(l) -174.10 155.60 -80.71
HNO3(g) -135.06 266.38 -74.72
HNO3(aq) -207.36 146.4 -111.25
Oxygen
O2(g) 0 205.138 0
O(g) 249.170 161.005 231.731
O3(g) 142.7 238.93 163.2

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