The enthalpies of formation of Al2O3 and Cr2O3 are -1596 kJ and -1134 kJ, respectively. ∆H for reaction 2Al + Cr2O3 → 2Cr + Al2O3 is ……
(a) -1365 kJ
(b) 2730 kJ
(c) -2730 kJ
(d) -462 kJ
2Al + Cr2O3 → 2Cr + Al2O3
