Consider the following balanced chemical equation for the combustion of acetylene (C2H2):
Overall Reaction: C2H2(g) + 5 O2(g) → 2 CO2(g) + 2 H2O(l)
Use the following reactions with known ΔHrxn values to calculate ΔHrxn (in kJ) for the overall reaction listed above:
Reaction 1: C(s) + O2(g) → CO2(g) ΔHrxn (kJ) = -393.5
Reaction 2: H2(g) + 1/2 O2(g) → H2O(l) ΔHrxn (kJ) = -285.8