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

form soluble complexes with cationic species

Polyphosphates are used as water softening agents because they form soluble complexes with cationic species of hard water, which are responsible for the hardness of the water.

The hardness of the water is mainly caused by the presence of naturally occurring dissolved calcium and magnesium. Here is a chemical reaction of the water softening process in the presence of polyphosphates-A water softening agents

2CaSO4 + Na2[Na4(PO3)6 → Na2 [Ca2(PO3)6] + 2Na2SO4

2MgSO4 + Na2[Na4(PO3)6]→ Na2[Mg2(PO3)6 + 2Na2SO4

So, the correct option is (A)

Was this answer helpful?

 
   

0 (0)

(0)
(0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question