Question

how Washing soda is prepared from sodium carbonate

Answer 1

HII

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HERE IS YOUR ANSWER:-)

BY THE PROCESS OF SOLVAVY PROCESS WE CAN PREPARE IT.BY USING LIMESTONE, AMMONIA AND SODIUM CHLORIDE.


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Answer 2

sodium carbonate can be obtained by heating baking soda; recrystallisation of sodium carbonate gives washing soda.
Na2CO3 +10H2O gives you Na2CO3. 10H2O