Chemistry

Chemistry

Problem

Using the standard enthalpies of formation below, calculate ΔH∘\Delta H^\circ for the reaction 2 CO(g)+O2(g)⟶2 CO2(g).2\,\text{CO}(g)+\text{O}_2(g)\longrightarrow 2\,\text{CO}_2(g). \u2022 ΔHf∘[CO(g)]=−110.5 kJ mol−1\Delta H_f^\circ[\text{CO}(g)]= -110.5\,\text{kJ}\,\text{mol}^{-1} \u2022 ΔHf∘[CO2(g)]=−393.5 kJ mol−1\Delta H_f^\circ[\text{CO}_2(g)]= -393.5\,\text{kJ}\,\text{mol}^{-1} a) −2.83×102 kJ-2.83\times10^{2}\,\text{kJ} b) −7.87×102 kJ-7.87\times10^{2}\,\text{kJ} c) −5.66×102 kJ-5.66\times10^{2}\,\text{kJ} d) +5.66×102 kJ+5.66\times10^{2}\,\text{kJ}

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