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प्रश्न
Define water of crystallization. Give two examples with formulae.
उत्तर
The fixed amount of water which is in loose chemical combination with a salt in its crystal is called water of crystallization.
Examples:
| Common name | Chemical name | Formulae |
| Blue vitroil | Copper sulphate pentahydrate |
CuSO4 5H2O |
| Green vitriol | Iron (2) sulphate heptahydrate | FeSO4 7H2O |
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संबंधित प्रश्न
Give two examples of Crystalline anhydrous substances.
What do you observe when Blue vitriol is heated?
The sticky substance formed when soap is added to hard water is ______.
Give one word for the following statement:
A substance which does not contain water .
Give the names and formulae of two substances
Anhydrous substance
The substance that can remove hydrogen and oxygen atoms in the ratio of 2:1(in the form of water) from the compound.
Complete the following table:
|
Common Name |
Chemical Name |
Formula |
Acid, base or salt |
Efflorescent, hygroscopic or deliquescent substance |
|
Solid caustic potash |
|
|
|
|
|
Quick lime |
|
|
|
|
|
Oil of vitriol |
|
|
|
|
|
Washing soda |
|
|
|
|
|
Solid caustic soda |
|
|
|
|
|
Blue vitriol |
|
|
|
|
Select the correct answer from the choice given in the options.
An anhydrous crystal _____.
Select the correct answer from the choice given in the options.
An anhydrate of a heptahydrate salt _____.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
