Question

(a) What is “baking powder”? How does it make the cake soft and spongy ?
(b) In addition to sodium hydrogencarbonate, baking powders contain a substance X. Name the substance X. What is the role of substance X in the baking powder ?

Lakhmir Singh Chemistry Class 10

Answer 1

backing powder contain sodium hydrogen carbonate and a mild edible acid like tartaric acid or citric acid when baking powder mixed in dough for preparing cakes or bread is heated sodium hydrogen carbonate decompose to give co2 sodium carbonate
carbon dioxide bubble out causing the bread and cakes to rise this makes light and fluffy
2. Nahco3 + H ions ---------- co2 + h2o + sodium salt of acid
co2 bubble out causing the bread and cakes to rise this make light and fluffy