November 2019 1 173 Report
Calcule a variação de entalpia do gás etano (C2H6) na combustão de 1mol C2H6. Dado a entalpia de formação das substâncias: C2H6 (g) ΔHf = -85Kj/mol.

CO2 (g) ΔHf = -394Kj/mol, H2o(l) ΔHf = -286Kj/mol e O2(g) ΔHf = 0Kj/mol.

C2H6(g) + 7/2 O2(g) → 2CO2(g) + 3H2O(l)
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