Given: C2H2 (g) + 5⁄2O2 (g) --> 2CO2 (g) + H2O (l) \Delta H\deg = −1299.5 kJ C (s) + O2 (g) --> CO2 (g) \Delta H\deg = −393.5 kJ H2 (g) + 1⁄2O2 (g) --> H2O (l) \Delta H\deg = −285.8 kJ What is the \Delta H\deg for this reaction? 3 C (s) + 3/2 H2 (g) ---> 3/2 C2H2 (g)