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Given the following thermochemical data at 25°C and 1 atm pressure, O2(g) + 2B(s) → B2O3(s) ; ΔH° = -1264 kJ
O3(g) + 2B(s) → B2O3(s) ; ΔH° = -1406 kJ
Determine ΔH° for the following reaction at 25°C and 1 atm pressure.
3O2(g) → 2O3(g)
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