The standard enthalpies of formation of Al2O3 and CaO are −1675kJmol – InterviewSolution

1.	The standard enthalpies of formation of Al2O3 and CaO are −1675kJmol−1and −635kJmol−1 respectively. For the reaction 3CaO+2Al→3Ca+Al2O3 the standard reaction enthalpy, ΔrH0=________kJ. (Round off to the Nearest Integer)
Answer» The standard enthalpies of formation of $A l_{2} O_{3}$ and $C a O$ are $- 1675 k J m o l^{- 1}$ and $- 635 k J m o l^{- 1}$ respectively. For the reaction $3 C a O + 2 A l \to 3 C a + A l_{2} O_{3}$ the standard reaction enthalpy, $Δ_{r} H^{0} =$ ________kJ. (Round off to the Nearest Integer)

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