Home
Class 10
CHEMISTRY
What is water of crystallisation ? Write...

What is water of crystallisation ? Write the common name and chemical formula of a commercially important compound which has ten water molecules as water crystallisation. How is this compound obtained ? Write the chemical equation also. List any two uses of this compound.

Text Solution

Verified by Experts

Water of crystallisation is the fixed number of water molecules present in one formula unit of the compound. The compound having ten water molecules as water of crystallisation in `Na_2CO_3.10H_2O` Its name is washing soda. Washing soda is obtained by heating baking soda and recrystallising the sodium carbonate obtained.
`2NaHCO_(3) overset("Heat") rarr Na_2CO_3 + H_2O + CO_2`
`Na_2CO_3 + 10 H_2O rarr Na_2CO_310 H_2O`
Uses of wahing soda :
(i) It is used in removing permanent hardness of water.
(ii) It is used in the manufacture of glass, soap and paper.
Promotional Banner

Topper's Solved these Questions

  • ACIDS, BASES AND SALTS

    U-LIKE SERIES|Exercise SHORT ANSWER QUESTIONS (THREE MARK EACH)|26 Videos

  • CARBON AND ITS COMPOUNDS

    U-LIKE SERIES|Exercise LONG ANSWER QUESTIONS|4 Videos

Similar Questions

Explore conceptually related problems

Write the chemical name and chemical formula of the salt used to remove permanent hardness of water.

Write the name and chemical formula of calcium compound used as a disinfectant. How is this compound manufactured ?

Define water of crystallisation. Give the chemical formula for two compounds as examples. how can it be proved that the water of crystallisation makes a difference in the state and colour of the compounds?

Write name and chemical formula of two such compounds whose one formula unit is associated with 10 and 2 water molecules respectively.

Write the name and formula of one salt each which contains. (a) Two molecules of water of crystallisation. (b) five molecules of water of crystallisation. (c). Ten molecules of water of crystallisation.