How do you write a balanced equation for the complete combustion of #C_3H_6O#?

1 Answer
Sep 8, 2016

Answer:

Add coefficients in front of each species so there is the same number of atoms of each element on both sides of the equation. Never change subscripts.

Explanation:

Complete combustion of an organic substance requires oxygen and produces carbon dioxide and water.

Unbalanced Equation

#"C"_3"H"_6"O" + "O"_2##rarr##"CO"_2" + H"_2"O"#

Balanced Equation

#"C"_3"H"_6"O" + "4O"_2##rarr##"3CO"_2" + 3H"_2"O"#

Notice that there are 3 carbon atoms on both sides, 6 hydrogen atoms on both sides, and 9 oxygen atoms on both sides.

Also notice that no chemical formula was changed (no change in subscripts.