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Given the Following Thermochemical Data at 25°C and 1 Atm

question 112

Multiple Choice

Given the following thermochemical data at 25°C and 1 atm pressure, Given the following thermochemical data at 25°C and 1 atm pressure,   O<sub>2</sub>(g) + 2B(s) → B<sub>2</sub>O<sub>3</sub>(s) ; ΔH° = -1264 kJ O<sub>3</sub>(g) + 2B(s) → B<sub>2</sub>O<sub>3</sub>(s) ; ΔH° = -1406 kJ Determine ΔH° for the following reaction at 25°C and 1 atm pressure. 3O<sub>2</sub>(g) → 2O<sub>3</sub>(g)  A) -980 kJ/mol B) +284 kJ/mol C) +980 kJ/mol D) -2670 kJ/mol E) -284 kJ/mol 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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