Chart: Standard Heats of Formation of Selected Substances

Standard Heats of Formation of Selected Substances
Substance Delta H{_f}^circ (kJ/mol) Substance Delta H{_f}^circ   (kJ/mol)
Al 2 O 3 (s) -1669.8 H 2 O 2 (l) -187.6
BaCl 2 (s) -860.1 KCl(s) -435.87
Br 2 (g) 30.91 NH 3 (g) -46.3
C (s, graphite) 0 NO(g) 90.4
C (s, diamond) 1.90 NO 2 (g) 33.85
CH 4 (g) -74.85 NaCl -411.0
C 2 H 5 OH(l) -276.98 O 3 (g) 142.2
CO(g) -110.5 P(s, white) 0
CO 2 (g) -393.5 P(s, red) -18.4
CaO(s) -635.6 PbO(s) -217.86
CaCO 3 (s) -1206.9 S(rhombic) 0
HCl(g) -92.3 S(monoclinic) 0.30
CuO(s) -155.2 SO 2 (g) -296.1
CuSO 4 (s) -769.86 SO 3 (g) -395.2
Fe 2 O 3 (s) -822.2 H 2 S(g) -20.15
H 2 O(g) -241.8 SiO 2 -859.3
H 2 O(l) -285.8 ZnCl 2 -415.89

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