How do I write equation for the combustion of CH4 to give CO2 and water?

1 Answer
Nov 25, 2015

Answer:

#"CH"_4" + 2O"_2"##rarr##"CO"_2" + 2H"_2"O"#

Explanation:

Unbalanced Equation

#"CH"_4" + O"_2"##rarr##"CO"_2" + H"_2"O"#

Balance the hydrogen.

Place a coefficient of #2# in front of the #"H"_2"O"#.

#"CH"_4" + O"_2"##rarr##"CO"_2" + 2H"_2"O"#

Balance the oxygen.

Place a coefficient of #2# in front of the #"O"_2"#.

#"CH"_4" + 2O"_2"##rarr##"CO"_2" + 2H"_2"O"#

There are now equal numbers of atoms of each element on both sides of the equation, and it is now balanced.

Number of Atoms on Left Side: #"1C; 4H; 4O"#

Number of Atoms on Right Side: #"1C; 4H; 4O"#