Salt A commonly used in bakery products on heating converts into another salt B which is used in the manufacture of glass and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify A, B and C. Write the reaction for heating of salt A.

Question

Philoid · Accepted Answer

Baking power is a salt which is used in bakery items gives sodium carbonate and carbon dioxide gas on heating. Sodium carbonate is used to remove the hardness of water and Carbon dioxide turns lime water milky.

2NaHCO₃ + Heat → Na₂CO₃ + CO₂ + H₂O

So,

1. Salt A is sodium bicarbonate which is used as baking powder.

2. Salt B is sodium carbonate which is used to remove the hardness of water.

3. Salt C is carbon dioxide gas which turns lime water milky.