Advertisements
Advertisements
प्रश्न
What do you observe when Blue vitriol is heated?
Advertisements
उत्तर
Blue vitriol is blue in colour as it contains 5 molecules of water of crystallization (CuSO4.H2O). When it is heated, it loses water of crystallization and becomes anhydrous CuSO4 which is grey-white in colour.
APPEARS IN
संबंधित प्रश्न
Give two examples for Deliquescent substance.
Give the names and formulae of two substances.
Hydrated substance
Give the names and formulae of two substances
Anhydrous substance
State the methods by which hydrated salts can be made anhydrous.
Name three methods by which hydrous substances can be made anhydrous.
Match the substances in List I with the appropriate answer in List II.
| List I | List II |
| 1. Green vitriol | A: Permanent hardness in water |
| 2. Paint | B: Hygroscopic |
| 3. Magnesium chloride | C: Temporary hardness in water |
| 4. Magnesium bicarbonate | D: Heptahydrate |
| 5. Calcium oxide | E: Colloidal |
Select the correct word from the words in option to complete the sentence:
Efflorescence occurs when the vapour pressure of the hydrated crystals is ____ than the vapour pressure of the atmospheric humidity.
Differentiate between the following:
Deliquescent salt and hygroscopic salt
The molecular formula of green vitriol is MgSO4.7H2O.
Define Hydrated salt.
