Hydrogen And Its Compounds Question 228
Question: Polyphosphates are used as water softening agents because they
Options:
A) form soluble complexes with anionic species
B) precipitate anionic species
C) form soluble complexes with cationic species
D) precipitate cationic species
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Answer:
Correct Answer: C
Solution:
[c] Polyphosphates form soluble complexes with $ C{a^{2+}} $ and $ M{g^{2+}} $ and are removed.
BETA
