Polyphosphates are used as water softening agents because they : (a...

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Polyphosphates are used as water softening agents because they :
(a) form soluble complexes with anionic species
\( \mathrm{P} \)
(b) precipitate anionic species
W
(c) form soluble complexes with cationic species
(d) precipitate cationic species
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