Question

What happens when sodium carbonate decahydrate is heated

Answer 1

Answer:

Sodium carbonate absorbs water to form a decahydrate, meaning that each molecule is associated with 10 water molecules.

As it's heated it begins to dehydrate, or lose water molecules to form the anhydrous compound.

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Answer 2

Sodium Carbonate Decahydrate is Washing Soda

Explanation:

$Na_2CO_3.10H_2O --> NaCO_3 + 10H_2O$

• Washing soda, also known as sodium carbonate decahydrate, when its crystals are strongly heated, the water of crystallization i.e. $10H_2O$ completely evaporates leaving behind anhydrous sodium carbonate i.e. $Na_2CO_3$

• Baking soda is sodium bicarbonate ($NaHCO_3$). When heated it breaks down into carbon dioxide gas and water. Carbon dioxide is liberated in the form of bubbles.

• Baking soda is also considered as baker's yeast.