Foundation
Chemistry Foundation
Coal Petroleum and Polymers
Question
If a burning matchstick is taken near the mouth of an outlet tube, the coal-gas :
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Solution
When coal gas (mainly methane, hydrogen, carbon monoxide) exits a tube and is ignited, it burns in air. The combustion is efficient with sufficient oxygen, producing a clean, hot flame. The characteristic color for such hydrocarbon gases burning in air is blue, indicating complete combustion.
Chemical reaction: + heat (blue flame)
Final Answer: burns with blue flames.