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Question on: JAMB Chemistry - 1990

Fe2O3(s) + 2Al(s) → Al2O3 + 2Fe(s) If the heats of formation of Al2O3 and Fe2O3 are - 1670 kj mol-1 and - 822 kj mol-1 respectively, the enthalpy change in kj for the reaction is ?
A
+2492
B
+848
C
-848
D
-2492
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Correct Option: C

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