Q.

Is it true that washing soda is obtained from baking soda?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Washing soda is made by boiling baking soda and then recrystallizing sodium carbonate. The reaction is as follows:
                               2NaHCO3Na2CO3+CO2+H2O
         Sodium bicarbonate + heat Sodium carbonate + carbon dioxide + water
Baking soda (NaHCO3) on heating gives sodium carbonate, which on crystallization from aqueous solution gives washing soda,
                             Na2CO3+10H2ONa2CO3.10H2O.
                         Sodium carbonate + water Washing soda.
 
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