Advertisements
Advertisements
प्रश्न
Explain the following observation:
In the expression anhydrous copper sulphate, what is meant by “anhydrous”?
Advertisements
उत्तर
Copper sulphate loses water of crystallization when heated and becomes white powder of CuSO4. This white powder (CuSO4) without water is anhydrous.
APPEARS IN
संबंधित प्रश्न
What do you observe when Blue vitriol is heated?
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 |
|
|
|
|
Name three methods by which hydrous substances can be made anhydrous.
Differentiate between an efflorescent, deliquescent & ‘ hygroscopic substance with suitable examples.
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
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 _____.
Name or state the following:
A liquid hydroscopic substance.
Match the following
| 1. | Blue vitriol | CaSO4.2H2O |
| 2. | Gypsum | CaO |
| 3. | Deliquescence | CuSO4.5H2O |
| 4. | Hygroscopic | NaOH |
