10. From the following enthalpy changes, calculate the value of AH° for the reaction 2 C9) + H2 → C2H2(8)- AH° = -393.5 kJ C(s) + O2(g) → CO2(g) H2(g) + ½ O2(g) → H2O(!) 2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H20(1)AH° = -2598.8 kJ AH° = -285.8 kJ

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