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प्रश्न
What happens when MgSO4.7H2O is heated? Write the appropriate equation?
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उत्तर
MgSO4.7H2O has water of crystallization is 7. When magnesium sulphate heptahydrate crystals are gently heated, it loses seven water molecules and becomes anhydrous magnesium sulphate.
\[\ce{\underset{\text{Magnesium sulphate heptahydrate}}{MgSO4.7H2O} ⇌[Heating][Cooling]\underset{\text{Anhydrous Magnesium sulphate}}{MgSO4 + 7H2O}}\]
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संबंधित प्रश्न
Define water of crystallization. Give two examples with formulae.
Give two examples for Deliquescent substance.
Water turns the colour of anhydrous copper sulphate .................
Give one word for the following statement:
A property due to which a substance absorbs water without dissolving.
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 |
|
|
|
|
What are hydrous substances? Explain with examples.
Differentiate between ‘hydrated’ & ‘anhydrous’ crystals. Give the chemical formula of – the following hydrated crystals -
(a) Washing soda
(b) Gypsum
(c) Blue vitriol
(d) Epsom salt
(e) Glauber’s salt.
State which crystal from (a) to (e) is a pentahydrate.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
