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When crystals of washing soda are left o...

When crystals of washing soda are left open in air, they lose

A

nine molecules of water of crystallisation

B

five molecules of water of crystallisation

C

three molecules of water of crystallisation

D

ten molecules of water of crystallisation

Text Solution

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`Na_(2)CO_(3).10H_(2)O overset("air") to Na_(2) CO_(3).H_(2)O`
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