Chemistry
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes which occur when hydrated copper sulphate is heated.
Answer
| Hydrated Crystals | Anhydrous Substance |
|---|---|
| Hydrated Crystals contain fixed number of water molecules [as water of crystallization] in loose chemical combination with the substance e.g., CuSO4.5H2O | Anhydrous Substance does not contain any fixed number of molecules [as water of crystallization] in loose chemical combination with the substance e.g., KNO3 |
Changes that occur when hydrated copper sulphate is heated are :
- White powder of anhydrous copper sulphate is formed from blue crystals of hydrated copper sulphate.
- No geometric shape is seen.
- Anhydrous copper sulphate is amorphous in nature.
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