Use the standard enthalpies of formation given below to calculate the enthalpy change for following reaction at 298.15 K and 1 atm. Label each as endothermic or exothermic.
The reduction of chromium (III) oxide with carbon:
2Cr2O3(s) + 3C(s) --> 4 Cr (s) + 3CO2(g)
Thermodynamic data:
Species Delta H (degrees F) (kJ/mol)
Cr203 -1134.7
C 0.0
Cr 0.0
CO2 -393.5