Question

35. 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.

Answer 1

Answer:

hi your answer is as follows:

Explanation:

salt A is baking soda which has the formula NaHCO₃

when it's heated it gets converted to sodium  carbonate which is Na2CO3

with the evolution of carbon di-oxide which is $CO_{2}$

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Answer 2

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Salt A - probably baking soda -  sodium bicarbonate :  Na  HCO₃ .    It is a white solid powder.

When it is heated,  2 Na HCO₃  ==>  Na₂ CO₃ + H₂O + CO₂

Sodium carbonate is  a white powder - which is washing soda.. it removes hardness of water.

The gas is carbon dioxide.

When it is passed through lime water, (calcium hydroxide - Ca (OH)₂ ),  then calcium carbonate Ca CO₃  white precipitate is formed.

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