What volume of oxygen is needed to completely combust 2.36 L of methane gas CH4?

1 Answer
anor277
Mar 6, 2016

CH4(g)+2O2(g)→CO2(g)+2H2O(l)

A volume of 4.72 L of dioxygen gas is required.

Explanation:

The combustion reaction is stoichiometrically balanced: garbage out equals garbage in. At a given temperature and pressure equal volumes of gas contain equal numbers of molecules.

Thus if we have a volume of methane, it will require DOUBLE the volume of dioxygen gas for stoichiometric reaction. You supplied the volume of methane gas in your starting conditions.

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