Home Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) HARD Polyphosphates are used as water softening a…
Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) HARD Single Correct MCQ
Published on: August 12, 2026

Polyphosphates are used as water softening agents because they

A
Form soluble complexes with anionic species
B
Precipitate anionic species
C
Forms soluble complexes with cationic species
D
Precipitate cationic species

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Text Solution

Verified by Experts
The correct answer is:
C

Polyphosphates (sodium hexametaphosphates, sodium tripolyphosphate or STPP) from soluble complexes with present in hard water.

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