What is the flammable range of Carbon Monoxide?

The flammable range of a substance indicates the concentrations in the air at which it can ignite or support combustion. For carbon monoxide, the correct flammable range is between 12.5% and 74%. Within this range, carbon monoxide can react with an ignition source, producing combustion.

Understanding this flammable range is crucial for firefighting and safety operations, as it helps firefighters assess the potential hazards of carbon monoxide in an environment, particularly in scenarios involving incomplete combustion, such as fires or engine exhausts. Awareness of the specific limits allows teams to take appropriate precautions and implement safety measures to prevent potential fires or explosions.

Other ranges listed in the options do not accurately reflect the known flammable limits of carbon monoxide and can lead to misunderstandings regarding its behavior in fire scenarios.