Question

what substance do the fire ertinguishers produce​

Answer 1

Sodium bicarbonate . . . .

Answer 2

Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire. That is, the gas drives oxygen away from the fire, thus stopping the chemical reaction.

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