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WATER - Coggle Diagram
WATER
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Addition of washing soda hydrated sodium carbonate can be used to soften the water as the carbonate ion reacts with the Ca2+ ions and remove them as insoluble CaCO3
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Ion exchange units that are involved in water softening have cation-exchange resin which exchanges positive ions (Ca2+ and Mg2+) in water for Na+ ions
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resin loses all Na+ ions but can be regenerated by passing concentrated NaCl solution throught the column