Question

An acid (A) with sodium hydrogencarbonate is used in making the cakes fluffy and spongy. It is due to the release of (B) gas in the reaction. Here, A and B are 

A. A: Oxalic acid : B : CO₂ 

B. A: Tartaric acid : B :O₂ 

C. A : succinic acid : B : H₂ 

D. A :Tartaric acid : B CO₂

Answer 1

Baking powder contains a mixture of baking soda and an acid, i.e., tartaric acid (A). When baking powder is heated or mixed in water, the following reaction takes place: 

NaHCO₃ (Baking sode) + H⁺ → CO₂ + H₂O + Sodium salt of acid

Carbon dioxide gas (B) is produced during the reaction causes cake to rise making them soft, fluffy and spongy. 

Thus, A is tartaric acid. 

B is carbon dioxide (CO₂)