Question

Salt A commonly used in bakery products, on heating gets converted into another
salt B; which itself is used for removal of hardness of water and a gas C is evolved.
The gas C when passed through lime water, turns it milky. Identify A, B and C and write the reaction involved.​

Answer 1

Answer:

(a) Baking powder (NaHCO3) i.e. salt 'A' is commonly used in bakery products. On heating, it forms sodium carbonate (Na2CO3) i.e. B and CO2 gas i.e. C is evolved. When CO2 gas is passed through lime water, it forms calcium carbonate (CaCO3), which is slightly soluble in water making it milky.