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How does a fire extinguisher work?

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The commonly seen metal cylinder with a short hose attached is the soda-and-acid extinguisher; inside it, above a solution of soda and water, is a container of acid. When the extinguisher is inverted, the acid mixes with the solution and reacts with the soda to generate carbon dioxide; gas pressure then forces the solution out of the hose.

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Get more facts and information about fire fighting from The Columbia Encyclopedia, Sixth Edition at Encyclopedia.com.

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