How is carbon dioxide produced in a soda-acid fire extinguisher?
Answer and explanation
Correct answer: By reaction of sodium hydrogen carbonate with acid
A soda-acid extinguisher uses sodium hydrogen carbonate, also called sodium bicarbonate, and an acid such as sulphuric acid. Their reaction produces sodium salt, water, and carbon dioxide: the carbonate or hydrogen carbonate part releases CO₂ when treated with acid. The gas is non-supportive of combustion and helps smother the fire. Thus option A is correct; the other reactions do not produce the required gas.
Frequently asked questions
What is the correct answer to this question?
By reaction of sodium hydrogen carbonate with acid
Why is this the correct answer?
A soda-acid extinguisher uses sodium hydrogen carbonate, also called sodium bicarbonate, and an acid such as sulphuric acid. Their reaction produces sodium salt, water, and carbon dioxide: the carbonate or hydrogen carbonate part releases CO₂ when treated with acid. The gas is non-supportive of combustion and helps smother the fire. Thus option A is correct; the other reactions do not produce the required gas.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
