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Calculate the standard enthalpy of reaction for 2 C(graphite) + 3 H2(g) C2H6(g) Given the following...

Calculate the standard enthalpy of reaction for 2 C(graphite) + 3 H2(g) C2H6(g) Given the following standard enthalpy of combustion data, ∆H˚comb (C(graphite) = –393.5 kJ·mol–1 H2(g) + ½ O2(g) H2O(l) ∆H˚rxn = –285.8 kJ·mol–1 2 C2H6(g) + 7 O2(g) 4 CO2(g) + 6 H2O(l) ∆H˚rxn = –3119.6 kJ·mol–1 (a) –84.6 kJ·mol–1 (b) 2440.2 kJ·mol–1 (c) –3799.0 kJ·mol–1 (d) –224.5 kJ·mol–1(e) not enough information provided

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