what happens when crystals of washing soda are kept open in the air for long time?
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Chemical formula of washing soda is Na2CO3.10 H2O
When sodium carbonate crystals are exposed to air They lose water of crystallization and turn to white powder. This process of loosing water of crystallization when exposed to air is called efflorescence.
Na2CO3 .10H2O → Na2CO3 + 10 H2O
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When kept in open air, the crystals of washing soda lose 9 molecules of water to form a monohydrate. In the above reaction, we can see that washing soda is losing 9 molecules of water of crystallization. The process in which water of crystallization is removed is called Efflorescence.
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