Standand Enthalpies of Formation Standand Enthalpies of Formation & Standard Entropies of Common Compounds
2
Substance State ∆H°f S°  
([(kJ)/(mol)]) ([(J)/(mol·K)])
Ag s 0 42.6
Ag+ aq 105.79 72.7
AgCl s −127.01 96.2
AgBr s −100.4 107.1
AgNO3 s −124.4 140.9
Al s 0 28.3
Al+3 aq −538.4 −321.7
AlCl3 s −704 110.7
Al2O3 s −1675.7 50.9
Ba s 0 62.8
BaCl2 s −858.6 123.7
BaCO3 s −1216.3 112.1
Ba(NO3)2 s −992 214
BaO s −553.5 70.4
Ba(OH)2 s −998.2 112
BaSO4 s −1473.2 132.2
Br2 l 0 152.2
C s 0 5.7
CCl4 l −135.4 216.4
CHCl3 l −134.5 201.7
CH4 g −74.8 186.2
C2H2 g +226.7 200.8
C2H4 g +52.3 219.5
C2H6 g −84.7 229.5
C3H8 g −103.8 269.9
CH3OH l −238.7 126.8
C2H5OH l −277.7 160.7
CO g −110.53 197.6
CO2 g −393.51 213.6
CO3 −2 aq −675.23 −56.9
Ca s 0 41.4
Ca+2 aq −543.0 −53.1
CaCl2 s −795.8 104.6
CaCO3 s −1206.9 92.9
CaO s −634.92 39.8
Ca(OH)2 s −986.1 83.4
CaSO4 s −1434.1 106.7
Cd s 0 51.8
Cd+2 aq −75.92 −73.2
CdCl2 s −391.5 115.3
CdO s −258.35 54.8
Substance
State ∆H°f S°  
([(kJ)/(mol)]) ([(J)/(mol·K)])
Cl2 g 0 223.0
Cl aq −167.080 56.5
ClO4 − aq −128.10 182.0
Cr s 0 23.8
Cr2O3 g −1139.7 81.2
Cu s 0 33.2
Cu+ aq +71.7 40.6
Cu+2 aq +64.8 −99.6
CuO s −157.3 42.6
Cu2O s −168.6 93.1
CuS s −53.1 66.5
Cu2S s −79.5 120.9
CuSO4 s −771.4 107.6
F aq −335.35 −13.8
F2 g 0 202.7
Fe s 0 27.3
Fe(OH)3 s −823.0 106.7
Fe2O3 s −824.2 87.4
Fe3O4 s −1118.4 146.4
H2 g 0 130.6
H+ aq 0 0.0
HBr g −36.29 198.6
HCO3 − aq −689.93 91.2
HCl g −92.31 186.8
HF g −273.30 173.7
HI g 26.50 206.5
HNO3 l −174.1 155.6
HPO4 −2 aq −1299.0 −33.5
HSO4 − aq −886.9 131.8
H2O l −285.830 69.9
H2O g −241.826 188.7
H2PO4 − aq −1302.6 90.4
H2S g −20.6 205.7
Hg l 0 76.0
Hg+2 aq 170.21 −32.2
HgO cr,red −90.79 70.3
Substance
State ∆H°f S°  
([(kJ)/(mol)]) ([(J)/(mol·K)])
I aq −56.78 111.3
I2 s 0 116.1
K s 0 64.2
K+ aq −252.14 102.5
KBr s −393.8 95.9
KCl s −436.7 82.6
KClO3 s −397.7 143.1
KClO4 s −432.8 151.0
KNO3 s −494.6 133.0
Mg s 0 32.7
Mg+2 aq −467.0 −138.1
MgCl2 s −641.3 89.6
MgCO3 s −1095.8 65.7
MgO s −601.60 26.9
Mg(OH)2 s −924.5 63.2
MgSO4 s −1284.9 91.6
Mn s 0 32.0
Mn+2 aq −220.8 −73.6
MnO s −385.2 59.7
MnO2 s −520.0 53.0
N2 g 0 191.5
NH3 g −45.94 192.3
NH4 + aq −133.26 113.4
NO2 − aq −104.6 123.0
NO3 − aq −206.85 146.4
N2H4 l +50.6 121.2
NH4Cl s −314.4 94.6
NH4NO3 s −365.6 151.1
NO g +90.2 210.7
NO2 g +33.2 240.0
N2O4 g +9.2 304.2
Na s 0 51.2
Na+ aq −240.34 59.0
NaCl s −411.2 72.1
NaF s −573.6 51.5
NaOH s −425.6 64.5
Substance
State ∆H°f S°  
([(kJ)/(mol)]) [(J)/(mol K)]
Ni s 0 29.9
NiO s −239.7 38.0
OH aq −230.015 −10.8
O2 g 0 205.0
P4 s 0 164.4
PCl3 g −287.0 311.7
PCl5 g −374.9 364.5
PO4 −3 aq −1277.4 −222
Pb s 0 64.8
Pb+2 aq 0.92 10.5
PbBr2 s −278.7 161.5
PbCl2 s −359.4 136.0
PbO s −219.0 66.5
PbO2 s −277.4 68.6
S s 0 31.8
SO2 g −296.81 248.1
SO3 g −395.7 256.7
SO4 −2 aq −909.34 20.1
S2 − aq +33.1 −14.6
Si s 0 18.8
SiO2 s −910.7 41.8
Sn s 0 51.6
Sn+2 aq −8.9 −17.4
SnO2 s −577.63 52.3
Zn s 0 41.6
Zn+2 aq −153.39 −112.1
ZnI2 s −208.0 161.1
ZnO s −350.46 43.6
ZnS s −206.0 57.7



File translated from TEX by TTH, version 3.68.
On 22 Aug 2005, 02:32.