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  • 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 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.

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Answer:

Salt A is sodium bicarbonate \text {NaHCO}_{3} (as it is used in bakery products and gives \text {Na}_{2}\text {CO}_{3} on heating).

Salt B is sodium carbonate \text {Na}_{2}\text {CO}_{3} (it is used for removal of hardness of water)

Gas C is carbon dioxide \text {CO}, (as it turns lime water milky).

\text {2NaHCO}_{3}\rightarrow \text {Na}_{2}\text {CO}_{3}+\text {H}_{2}\text {O}+\text {CO}_{2}\left ( g \right )                

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