Dadas as equações termoquímicas:
I. Cgraf + O2(g) → CO2(g) ∆H = -393 kJ/mol

II. H2(g) + 1/2O2(g) → H2O(l) ∆H = -286,0 kJ/mol

III. 2Cgraf + 2H2(g) + O2(g)→CH3COOH(l) ∆H = -484,


0 kJ/mol A entalpia-padrão de combustão do ácido acético é:
A. + 874 kJ
B. +195 kJ
C. –195 kJ
D. –874 kJ
E. –1163 kJ
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