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.
Salt A is sodium hydrogen carbonate (baking soda). When it is heated, it turns into sodium carbonate; which is salt B. In this reaction, carbon dioxide gas is also produced; which is the gas C.
2NaHCO3 + Heat → Na2CO3 + CO2 + H2O
Sodium hydrogen carbonate is used in bakery products. Sodium carbonate is used for removing hardness of water.
