Consider the reactions 1. C(graphite) + O2(g) → CO2(g) ΔHxn=-393.5 kJ 2. H2(g) + 1/2O2(g) - H₂O(1) ΔHOrxn=-285.8 kJ

Question

Consider the reactions
1. C(graphite) + O2(g) →> CO2(g)      ΔHxn=-393.5 kJ
2. H2(g) + 1/2O2(g) -> H₂O(1)      ΔHOrxn=-285.8 kJ
3. 2 C2H2(g) + 5 O2(g) -> 4 CO2(g) + 2 H₂O0)    ΔHºrn = -2598.8 kJ
Calculate the ΔHOrxn for the reaction:
2 C(graphite) + H2(g) -> C2H2(g)     ΔHᵒrn = ???

Kunduz · Accepted Answer

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Consider the reactions 1. C(graphite) + O2(g) →> CO2(g)