Perry’s Chemical Engineers’ Handbook, Eighth Edition


Properties of Formation and Combustion Reactions

Properties of Formation and Combustion Reactions

Units Conversions

; to convert kilocalories per gram-mole to British thermal units per pound-mole, multiply by 1.799 10 3.

Table 2-178: Heats and Free Energies of Formation of Inorganic Compounds

The values given in the following table for the heats and free energies of formation of inorganic compounds are derived from ( a) Bichowsky and Rossini, Thermochemistry of the Chemical Substances, Reinhold, New York, 1936; ( b) Latimer, Oxidation States of the Elements and Their Potentials in Aqueous Solution, Prentice-Hall, New York, 1938; ( c) the tables of the American Petroleum Institute Research Project 44 at the National Bureau of Standards; and ( d) the tables of Selected Values of Chemical Thermodynamic Properties of the National Bureau of Standards. The reader is referred to the preceding books and tables for additional details as to methods of calculation, standard states, and so on.

Compound

State [ ]

Heat of formation [ ] [ ] ?H (formation) at 25 C, kcal/mol

Free energy of formation [?] [ ] ?F (formation) at 25 C, kcal/mol

Aluminum

Al

c

0.00

0.00

AlBr 3

c

123.4

aq

209.5

189.2

Al 4C 3

c

30.8

29.0

AlCl 3

c

163.8

aq, 600

243.9

209.5

AlF 3

c

329

aq

360.8

312.6

AlI 3

c

72.8

aq

163.4

152.5

AlN

c

57.7

50.4