Page 716 - Corrosion Engineering Principles and Practice
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C h a p t e r 1 5
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Temperature
Range
Heat Capacity (Cp)
(J mol –1 K –1 ) 39.33 104.307
A D C B T 2 T 1 (K) (K) 700 298.15 0 0 0 20.786 3000 700 0.874 16.828 2.556 15.456 1000 298.15 −9.033 −0.377 22.966 17.715 2130 1000 0 −16.698 15.531 18.067 2945 2130 0 0 0 2603 298.15 −3.807 7.59 24.451 400 298.15 −11.201 0.222 25.33 24.518 1600 400 -1
Entropy S (J mol –1 K –1 ) 174.305 – 23.64 – 7.95 81.199 239.266 – 269.24 – 266.169 205.146
Enthalpy H (kJ mol –1 ) 397.48 – 0 – 16.933 −1139.7 188.28 – −75.312 – −292.88 0 Thermochemical Data for the Cr-O System
State gas gas solid solid liquid solid gas gas gas gas gas gas
Species Cr Cr Cr 2 O 3 CrO CrO 2 CrO 3 O 2 TABLE 15.2
