Question

Calculate the enthalpy of the reaction 2NO(g)+ O 2 (g)→2N O 2 (g) given the following reactions and enthalpies of formation: 1 2 N 2 (g)+ O 2 (g)→N O 2 (g), Δ H ∘ A =33.2 kJ 1 2 N 2 (g)+ 1 2 O 2 (g)→NO(g), Δ H ∘ B =90.2 kJ

Answer 1

4 B(s) + 3 O2(g) -> 2 B2O3(s)
deltaH = 72 + 1710 - 4070 - 264 = -2552 kJ
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