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Polyphosphates are used as water softeni...

Polyphosphates are used as water softening agents because they

A

form soluble complexes with anionic species

B

precipitate anionic species

C

form soluble complexes with cationic species

D

precipitate cationic species

Text Solution

Verified by Experts

The correct Answer is:
C
`2Ca^(2+) + Na_2[Na_4(PO_3)_6] to 4Na^(+) + underset"(soluble)"(Na_2[Ca_2(PO_3)_6])`
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