Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Solving Problems: A Chemistry Handbook
Chemistry: Matter and Change
313
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
Appendix A
Heat of Formation Values
Substance
⌬H f
°
Ag(s)
0
AgCl(s)
Ϫ127.068
AgCN(s)
146.0
Al 2 O 3
Ϫ1675.7
BaCl 2 (aq)
Ϫ871.95
BaSO 4
Ϫ1473.2
BeO(s)
Ϫ609.6
BiCl 3 (s)
Ϫ379.1
Bi 2 S 3 (s)
Ϫ143.1
Br 2
0
CCl 4 (l)
Ϫ128.2
CH 4 (g)
Ϫ74.81
C 2 H 2 (g)
226.73
C 2 H 4 (g)
52.26
C 2 H 6 (g)
Ϫ84.68
CO(g)
Ϫ110.525
CO 2 (g)
Ϫ393.509
CS 2 (l)
89.70
Ca(s)
0
CaCO 3 (s)
Ϫ1206.9
CaO(s)
Ϫ635.1
Ca(OH) 2 (s)
Ϫ986.09
Cl 2 (g)
0
Co 3 O 4 (s)
Ϫ891
CoO(s)
Ϫ237.94
Cr 2 O 3 (s)
Ϫ1139.7
CsCl(s)
Ϫ443.04
Cs 2 SO 4 (s)
Ϫ1443.02
CuI(s)
Ϫ67.8
CuS(s)
Ϫ53.1
Cu 2 S(s)
Ϫ79.5
CuSO 4 (s)
Ϫ771.36
F 2 (g)
0
FeCl 3 (s)
Ϫ399.49
FeO(s)
Ϫ272.0
FeS(s)
Ϫ100.0
Fe 2 O 3 (s)
Ϫ824.2
Fe 3 O 4 (s)
Ϫ1118.4
H(g)
217.965
H 2 (g)
0
HBr(g)
Ϫ36.40
HCl(g)
Ϫ92.307
HCl(aq)
Ϫ167.159
HCN(aq)
108.9
HCHO
Ϫ108.57
HCOOH(l)
Ϫ424.72
HF(g)
Ϫ271.1
HI(g)
26.48
H 2 O(l)
Ϫ285.830
H 2 O(g)
Ϫ241.818
H 2 O 2 (l)
Ϫ187.8
Substance
⌬H f
°
H 3 PO 3 (aq)
Ϫ964.4
H 3 PO 4 (aq)
Ϫ1279.0
H 2 S(g)
Ϫ20.63
H 2 SO 3 (aq)
Ϫ608.81
H 2 SO 4 (aq)
Ϫ814.0
HgCl 2 (s)
Ϫ224.3
Hg 2 Cl 2 (s)
Ϫ265.22
Hg 2 SO 4 (s)
Ϫ743.12
I 2 (s)
0
KBr(s)
Ϫ393.798
KMnO 4 (s)
Ϫ837.2
KOH
Ϫ424.764
LiBr(s)
Ϫ351.213
LiOH(s)
Ϫ484.93
Mn(s)
0
MnCl 2 (aq)
Ϫ555.05
Mn(NO 3 ) 2 (aq)
Ϫ635.5
MnO 2 (s)
Ϫ520.03
MnS(s)
Ϫ214.2
N 2 (g)
0
NH 3 (g)
Ϫ46.11
NH 4 Br(s)
Ϫ270.83
NO(g)
90.25
NO 2 (g)
33.18
N 2 O(g)
82.05
Na(s)
0
NaBr(s)
Ϫ361.062
NaCl(s)
Ϫ411.153
NaHCO 3 (s)
Ϫ950.8
NaNO 3 (aq)
Ϫ447.48
NaOH(s)
Ϫ425.609
Na 2 CO 3 (s)
Ϫ1130.7
Na 2 S(aq)
Ϫ447.3
Na 2 SO 4 (s)
Ϫ1387.08
NH 4 Cl(s)
Ϫ314.4
O 2 (g)
0
P 4 O 6 (s)
Ϫ1640.1
P 4 O 10 (s)
Ϫ2984.0
PbBr 2 (s)
Ϫ278.7
PbCl 2 (s)
Ϫ359.41
SF 6 (g)
Ϫ1220.5
SO 2 (g)
Ϫ296.830
SO 3 (g)
Ϫ454.51
SrO(s)
Ϫ592.0
TiO 3 (s)
Ϫ939.7
TlI(s)
Ϫ123.5
UCl 4 (s)
Ϫ1019.2
UCl 5 (s)
Ϫ1059
ZnCl 2 (aq)
Ϫ488.19
ZnO(s)
Ϫ348.28
ZnSO 4 (aq)
Ϫ1063.15
⌬H f
° (kJ/mol) (concentration of aqueous solutions is 1M)
Table A-8