1. Tardigrade
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  3. Chemistry
  4. The enthalpies of formation of A12O3 and Cr3O3 are -1596 kJ and -1134 kJ respectively. Δ H for the reaction 2Al+Cr2O3arrow2Cr+Al2O3

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Q. The enthalpies of formation of $A1_2O_3$ and $Cr_3O_3$ are -1596 kJ and -1134 kJ respectively. $\Delta\,H$ for the reaction $2Al+Cr_2O_3\rightarrow2Cr+Al_2O_3$

KCETKCET 2003Thermodynamics

Solution:

Correct answer is (d) -462 kJ .