What is the explosive mixture of acetylene and air?

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Multiple Choice

What is the explosive mixture of acetylene and air?

Explanation:
Acetylene in air has a flammable range—the concentrations at which ignition can occur. For acetylene, that range is roughly 2.5% to about 80% acetylene by volume in air. Below about 2.5%, the mixture is too lean to ignite; above about 80%, there isn’t enough oxygen to sustain combustion. So the explosive mix is within 2.5% to 80% acetylene in air. The other ranges are outside this window.

Acetylene in air has a flammable range—the concentrations at which ignition can occur. For acetylene, that range is roughly 2.5% to about 80% acetylene by volume in air. Below about 2.5%, the mixture is too lean to ignite; above about 80%, there isn’t enough oxygen to sustain combustion. So the explosive mix is within 2.5% to 80% acetylene in air. The other ranges are outside this window.

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