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प्रश्न
Explain with equation, what is noticed when permanent hard water is treated with
Slaked time
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उत्तर
Slaked lime
\[\ce{Ca(HCO3)2 + Ca(OH)2 ->[Boil] 2CaCO3 + 2H2O}\]
\[\ce{Mg(HCO3)2+ Ca(OH)2 ->[Boil] MgCO3 + CaCO3 + 2H2O}\]
Lime is first thoroughly mixed with water in a tank and then fed into another tank containing hard water. Revolving paddles thoroughly mix the two solutions. Most of the calcium carbonate settles down. If there is any solid left over, it is removed by a filter. This is known as Clarke's process.
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संबंधित प्रश्न
What causes the temporary and permanent hardness of water?
What do you understand by
Permanent hard water
What are the causes for:
Temporary hardness
How will you distinguish between temporary hard water and permanent hard water?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between temporary hard water and permanent hard water?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness from water without using a chemical compound?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness and permanent hardness from water using a chemical compound?
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
Select the correct answer from the choice given in the options.
A substance which causes hardness in water _____.
Name or state the following:
A substance added to remove both temporary and permanent hardness in water.
Soap lathers well in hard water.
Match the following.
| Universal solvent | Water pollutant |
| Hard water | Kills germs |
| Boiling | Ozonisation |
| Sterilization | Water |
| Sewage | Stomach ailments |
What is soft water?
Which water is soft?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Concentration of the solution is ______.
