Final answer:
The balanced equation for the combustion of C2H2 is C2H2 + 5O2 -> 2CO2 + H2O.
Step-by-step explanation:
The balanced equation for the combustion of C2H2 is:
C2H2 + 5O2 -> 2CO2 + H2O
This equation shows that two molecules of C2H2 reacts with five molecules of O2 to produce two molecules of CO2 and one molecule of H2O. Note that the coefficients in front of each molecule are the smallest whole numbers that make the equation balanced.