What is the primary composition of natural gas?

The primary composition of natural gas is methane, which has the chemical formula CH4. Methane is a simple hydrocarbon consisting of one carbon atom bonded to four hydrogen atoms. This composition makes methane the most abundant constituent of natural gas, typically accounting for 70% to 90% of its content.

In addition to methane, natural gas can contain small amounts of other hydrocarbons, water vapor, and impurities, but methane remains the predominant component. Understanding this is essential for various applications, including combustion, heating, and energy production in fireplaces and appliances.

The other chemical formulas listed represent different hydrocarbons with varying compositions. Propane (C3H8), acetylene (C2H2), and pentane (C5H12) are all alternative gases that are part of broader hydrocarbon classifications but are not the primary constituents of natural gas. The prevalence of methane in the natural gas supply is why it is specifically identified in this context.