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What is inside a fire extinguisher?
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There are various kinds of fire extinguishers designed to fight different types of fire. Electrical fires and those involving flammable liquids need a carbon dioxide (CO2) extinguisher (1). It releases a blanket of CO2 gas that keeps air from the fire. A dry-powder extinguisher (2) contains sodium bicarbonate, which smothers a fire. A soda-acid extinguisher (3) contains sodium carbonate and a flask of acid. If the flask is broken, a chemical reaction releases a stream of frothy water. | | It is important to use the right kind of fire extinguisher when tackling a fire. |
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Previous:
Back
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Book:
1001
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Section:
Science and Technology
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Chapter:
Chemistry
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