Question

29. When a sodium compound 'X' which is also used in a soda-acid fire extinguisher is heated, it
gives a sodium compound 'Y' along with water and carbon dioxide. 'Y' on crystallisation forms a
compound 2
(a) Identify 'X', 'Y' and 'Z'.
(b) How can we obtain 'Y' from 'Z?
(c) Write two uses of compound Z.
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Answer 1

Answer:

This is required solution to the question.

Answer 2

Answer:

The sodium compound X used in fire extinguisher is Sodium bicarbonate (NaHCO3) and when it is heated it gives sodium carbonate (Na2CO3) as Y along with water (H2O) and carbon dioxide (CO2). Sodium carbonate on absorbs 10 molecules of water and crystallises into sodium decahydrate (Na2CO3. 10H2O).

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