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Polyphosphates are used for softening agents because theyA. form soluble complexes with anionic speciesB. precipitate anionic speciesC. form soluble complexes with cationic speciesD. preipitate cationic species |
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Answer» Correct Answer - C It sequesters `Ca^(2+)` and `Mg^(2+)` (present in hard water) and forms soluble complex with `Ca^(2+)` and `Mg^(2+)` which do not precipitate with `CO_(3)^(2-)` and soap. |
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