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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
Temporary hard water
What do you understand by
Permanent hard water
Name the substance which makes water permanently hard.
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?
State what are synthetic detergents. Explain experimentally how you will determine the advantage of synthetic detergents over soap using a sample of hard water.
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.
What are the causes of temporary hardness and permanent hardness of water?
The pleasant taste of drinking water is due to the presence of a dissolved substance which includes air, CO2, and minerals.
What is soft water?
Which water is hard?
Which water is soft?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Concentration of the solution is ______.
