What happens when crystals of washing soda are exposed to air?
Washing soda undergoes efflorescence and as a result loses nine molecules of water to form white powder
Na2CO3⋅10H2O→Na2CO3.H2O+9H2O
Washing soda Washing powder
What happens to the crystals of washing soda when exposed to air?
State your observations when
(a) Washing soda crystals
(b) Iron (III) chloride salts are exposed to atmosphere.