How to write the reaction that corresponds to the ΔH_f for acetylene?
a)₂C₂H₂(g)+3O₂(g)→2CO₂(g)+2H₂O(l)
b)C₂H₂(g)+2O₂(g)→CO₂(g)+H₂O(l)
c)C-2H₂(g)+O₂(g)→CO₂(g)+H₂O(l)
d)₂C₂H₂(g)+5O₂(g)→4CO₂(g)+2H₂O(l)