Explain hrxn representan enthalpy of formation

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For which of the following reactions does ?Hrxn representan enthalpy of formation? C(s) + O2(g) -> CO2(g) CO2(g) + C(s) -> 2 CO (g) CO2(g) + H2(g) -> H2O(g) + CO(g) 2 H2(g) + C(s) -> CH4(g)

Reference no: EM13337416

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