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प्रश्न
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
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उत्तर
When washing soda or soda ash is added to hard water, the corresponding insoluble carbonates settle down and can be removed by filtration.
\[\ce{Ca(HCO3)2 + Na2CO3 ->[boil] CaCO3 \downarrow + 2NaHCO3}\]
\[\ce{Mg(HCO3)2 + Na2CO3 ->[boil] MgCO3 \downarrow + 2NaHCO3}\]
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संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
Name the compound responsible for temporary hardness.
Suggest one method for the removal along with the reaction for temporary hardness.
What do you understand by
Hard water
What are the advantages of hard water.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
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.
What is permanent hardness of water? How can it be removed?
What is the reason for the hardness of water?
