CxHyO + 5O2 → 4CO2 + 4H2O
On balancing the equation, we should have
X = 4 , y = 8 and O = 2 ⇒ C4H8O2
Since 2 is a common factor to the three atoms, we can divide through by 2, considering the fact that that formula is not in the option.
We finally have C2H4O
