Tables of ΔfHo  and  So  at 298K:
Element:
ΔfHo
kJ/mol
So
J/mol K

Element:
ΔfHo
kJ/mol
So
J/mol K
C(graphite) 
5.740
Ni(s)
29.9
C(diamond) +1.887 2.38
O2(g)
205.0
Ca(s) 
41.4
P4(s)
41.1( x 4*)
Cl2(g) 
223.0
P4(g) +58.91 280.0
Cu(s) 
33.15
S8(s)
31.9( x 8*)
F2 (g)
202.7



Fe(s) 
27.3
Si(s)
18.8
H2(g) 
130.6
Ti(s)
30.6
I2(s) 
116.1
Zn(s)
41.6
N2(g)
191.5



Aqueous Ions:
ΔfHo
kJ/mol
ΔSo
J/mol K

Aqueous Ions:
ΔfHo
kJ/mol
ΔSo
J/mol K
Al3+ -531.0 -321.7
HSO4- -887.3  +131.8 
Ag+ +105.6 +72.68
I -55.2 +111.3
Br -121.6 +82.4
K+ -252.4 +102.5 
CO32- -677.1 -56.9 
NH4+ -132.5 +113.4
CH3COO- -486.0 86.6
NO2- -104.6 +123.0
Ca2+ -542.8 -53.1
NO3- -205.0 +146.4
Cl- -167.2  +56.5
Na+ -240.1 +59.0
Cu2+ +64.77  +99.6
OH- -230.0 -10.8
F- -79.50 -3.3



Fe2+ -89.1 -137.6
PO43- -1277.4  -222
Fe3+ -48.5 -315.9
S2- +33.1 -14.6
H+   0   0
SO42- -909.3 +20.1
H2PO4 -1296.3  +90.4
Zn2+ -153.9 -112.1
HPO42- -1292.1 -33.5



 *If in the reaction you use these elements with a subscript of 1, i.e. P and S, then do not multiply by 4 or 8.  If you use the subscripts, P4 and S8, multiply the numbers by 4 and 8.