What is the primary composition of natural gas?

Natural gas primarily consists of methane, which is a simple hydrocarbon with the chemical formula CH4. It is the predominant component in natural gas, typically making up about 70-90% of its composition. Methane is favored as a fuel source for several reasons: it burns cleanly, produces a minimal amount of carbon emissions compared to other fossil fuels, and is efficient in terms of energy content.

In commercial and residential applications, methane is utilized as a heating fuel, for cooking, and as a feedstock in the production of various chemicals. Its properties make it suitable for widespread use, contributing to its status as the primary component of natural gas systems.

The other options, while hydrocarbons, do not represent the main component of natural gas. Butane and propane are heavier hydrocarbons and are typically found in liquid petroleum gas (LPG) or are used as fuels in different applications, while ethane, though present in natural gas, is not the dominant composition. These characteristics clarify why methane is recognized as the primary element in natural gas.