When sodium bicarbonate is heated strongly, it decomposes into sodium carbonate, water, and carbon dioxide. The reaction is as follows:
$$\ce{2NaHCO3(s) -> Na2CO3(s) + H2O(g) + CO2(g)}$$
Sodium carbonate is a white solid that is used in many different products, including baking soda, toothpaste, and glass. Water is a colorless, odorless liquid that is essential for life. Carbon dioxide is a colorless, odorless gas that is used in fire
extinguishers and to make carbonated beverages.Option A is the correct answer. Sodium carbonate is the product formed when sodium bicarbonate is heated strongly.
Option B is incorrect. Sodium hydroxide is not formed when sodium bicarbonate is heated strongly.
Option C is incorrect. Sodium peroxide is not formed when sodium bicarbonate is heated strongly.
Option D is incorrect. Sodium monoxide is not formed when sodium bicarbonate is heated strongly.