The enthalpies of formation of Al2O3 and Cr2O3 are -1596 kJ and -1134 kJ, respectively. ΔH for reaction 2A1 + Cr2O3 → 2Cr + Al2O3 is …………………… .
A. -1365 kJ
B. 2730 kJ
C. -2730 kJ
D. -462 kJ
Answer:D
The enthalpies of formation of Al2O3 and Cr2O3 are -1596 kJ and -1134 kJ, respectively. ΔH for reaction 2A1 + Cr2O3 → 2Cr + Al2O3 is …………………… .
A. -1365 kJ B. 2730 kJ C. -2730 kJ D. -462 kJ