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प्रश्न
Give balanced equation to show how temporary hardness in water can be removed by boiling.
उत्तर
To remove temporary hardness by boiling: Bicarbonate changes to insoluble carbonate and water becomes soft.
\[\ce{\underset{\text{calcium bicarbonate in hard water}}{Ca[HCO3]2}->[Boil]\underset{\text{Cal.carbonate}}{CaCO3}↓ + CO2 +\underset{\text{water}}{H2O}}\]
\[\ce{\underset{\text{Magnesium bicarbonate}}{Mg[HCO3]2}->[Boil]\underset{\text{Magnesium bicarbonate}}{MgCO3↓} + CO2 + H2O}\]
संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
What do you understand by
Soft water
What are the advantages of hard water.
State the disadvantages of using hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
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Differentiate between Hard & soft water with suitable examples.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between hard and soft water?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
State the causes of hardness in water.
A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.
Name the process by which temporary hardness is easily removed from the water.
Write a note on ion exchange.
What is the reason for the hardness of water?
