# If a molecule of carbon dioxide is involved in a chemical reaction, how is it represented in the chemical equation for the reaction?

Feb 25, 2016

$C {H}_{4} \left(g\right) + 2 {O}_{2} \left(g\right) \rightarrow C {O}_{2} \left(g\right) + 2 {H}_{2} O \left(g\right)$
$C {O}_{2} \left(s\right) + R M g - X \rightarrow R - C {O}_{2}^{-} M g X \left(s\right)$
Now, of course, as chemists we deal with molar quantities, and the oxidation reaction must involve a series of complex elementary steps, but here the molecule is simply represented as $C {O}_{2}$, as the gas or as the solid. Does this address your question, or am I wide of the mark?