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प्रश्न
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
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उत्तर
Using washing soda, removal of:
(i) Temporary hardness
\[\ce{\underset{\text{washinng soda}}{Na2CO3} +\underset{\text{temporary hardness}}{Ca(HCO3)2} -> CaCO3↓ + 2NaHCO3}\]
\[\ce{\underset{\text{washinng soda}}{Na2CO3} +\underset{\text{temporary hardness}}{ Mg(HCO3)2} -> MgCO3↓ + 2NaHCO3}\]
(i) Permanent hardness
\[\ce{\underset{\text{washing soda}}{Na2CO3} +\underset{\text{permanent hardness}}{CaSO4} ->Na2SO4 +\underset{\text{insoluable}}{CaCO3↓}}\]
\[\ce{\underset{\text{washing soda}}{Na2CO3} +\underset{\text{permanent hardness}}{MgCL2} -> \underset{\text{insoluable}}{MgCO3↓} + 2NaCl}\]
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संबंधित प्रश्न
What causes the temporary and permanent hardness of water?
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How will you distinguish between temporary hard water and permanent hard water?
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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?
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Select the correct answer from the choice given in the options.
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| Sewage | Stomach ailments |
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