Questions
The reagent(s) used for softening the temporary hardness of water are
a) Ca3(PO4)2
b) Ca(OH)2
c) Na2CO3
d) NaOCl
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Correct option is C
Temporary hardness of water is due to the presence of soluble bicarbonates of Ca & Mgi.e,. Ca(HCO3)2 Ag(HCO3)2The temporary hardness of water is removed by 3-ways in all these 3-Process soluble bicarbonates converting into insoluble carbonates(1) By boiling(2) By heating with washing soda [Na2CO3.10H2O] (3) By clark's process: Reagent used in this process is Ca(OH)2.Similar Questions
The molecular formula of a commercial resin used for exchanging ion in water softening is C8H7SO3 Na (mol. wt. = 206). What would be the minimum uptake of Ca2+ ions by the resin when expressed in mole per gram resin ?
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