The correct answer is: Sodium hydrogen carbonate (NaHCO3).
Sodium hydrogen carbonate is also known as baking soda or sodium bicarbonate. It is a white, crystalline solid that is used in a variety of applications, including baking, cleaning, and fire extinguishing.
In fire extinguishers, sodium hydrogen carbonate is used to create a chemical reaction that produces carbon dioxide gas. The carbon dioxide gas smothers the fire by displacing the oxygen in the air.
The other options are incorrect. Calcium oxychloride (CaOCl2) is also known as bleach. It is a white, solid that is used as a disinfectant and bleaching agent. Sodium hydroxide (NaOH) is also known as lye. It is a white, solid that is used in a variety of applications, including soap making, paper making, and metal processing. Sodium carbonate (Na2CO3) is also known as washing soda. It is a white, crystalline solid that is used in a variety of applications, including laundry detergent, glassmaking, and water treatment.
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