Write the chemical name of Na2CO3. 10H2O and Na2 CO3 . Write the significance of 10 H2O. Mention the term used for water molecules attached with a salt. With the help of chemical equation. Explain the method of preparation of both Na2CO3. 10 H2O and Na2CO3. Also list two uses of Na2CO3. 10 H2O

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Solution

The chemical name of (Na₂CO₃.10H₂O) is sodium carbonate decahydrate. 10 H2O represents the water of hydration. It is prepared by Solvay process.The reactions involved are:
NaCl + CO₂ + NH₃ + H₂O â†’ NaHCO₃ + NH₄Cl
2 NaHCO ₃â†’ Na₂CO₃ + CO₂+ H₂O
Na₂CO₃ + 10H₂O â†’ Na₂CO₃.10H₂O
Uses:
It is used in paper industry
It is used for softening of water

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The formula of soda ash is
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