Which one of the following is the chemical name for baking soda ?

Baking soda is the common name for the chemical compound sodium hydrogen carbonate, which is also widely referred to as sodium bicarbonate [3]. Its chemical formula is NaHCO3 [1]. It is a weak base that reacts with acids, such as vinegar or lemon juice, to release carbon dioxide gas, which acts as a leavening agent in baking to make cakes and bread soft and spongy [4]. In contrast, sodium carbonate (Na2CO3) is known as soda ash or washing soda and is a stronger base [3]. While potassium bicarbonate (KHCO3) can serve as a low-sodium substitute in baking due to similar leavening properties, it is not the substance traditionally identified as baking soda. Sodium bicarbonate is also utilized in antacids to neutralize stomach acid and in soda-acid fire extinguishers [1].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Uses of Baking soda > p. 31
2. [3] https://www.ams.usda.gov/sites/default/files/media/2025_TR-Sodium_Bicarbonate-Handling_508.pdf
3. [4] Science-Class VII . NCERT(Revised ed 2025) > Chapter 5: Changes Around Us: Physical and Chemical > Activity 5.4: Let us experiment > p. 61