# State What Would You Observe When : - Chemistry

State what would you observe when :
Washing soda crystals are exposed to the atmosphere.

#### Solution

When washing soda (Na2CO3.10H2O) is exposed to air, it loses 9 molecules of water to form a monohydrate.
$\ce{Na2CO1.10H2O ->[air] Na2CO1.H2O + 9H2O}$

Concept: Salts
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#### APPEARS IN

Frank ICSE Class 10 Chemistry Part 2
Chapter 3 Study Of Acids, Bases and Salts
Exercise | Q 1.1 | Page 78