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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 is the effect on boiling point of water when impurity is added.
Name the compound responsible for temporary hardness.
Temporary hardness of water can be removed by
What do you understand by
Hard water
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Give balanced equation to show how temporary hardness enters into water.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
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Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Write a note on ion exchange.
