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Question
What happen to the crystals of washing soda when exposed to air? Name the phenomenon exhibited.
Short/Brief Note
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Solution
When washing soda crystals are exposed to air, they lose their water of crystallisation, a phenomenon known as efflorescence.
\[\ce{\underset{Washing soda}{Na2CO3.10H2O} ->[\Delta]\underset{carbonate}{\underset{Sodium}{Na2CO3}} + 10H2O}\]
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Chapter 3: Acids, Bases and Salts - EXERCISE [Page 77]
