Hydrogen And Its Compounds Question 1
Question: Polyphosphates are used as water softening agents because they
[IIT JEE (Screening) 2002]
Options:
A) Form soluble complexes with anionic species
B) Precipitate anionic species
C) Forms soluble complexes with cationic species
D) Precipitate cationic species
Show Answer
Answer:
Correct Answer: C
Solution:
Polyphosphates (sodium hexametaphosphates, sodium tripolyphosphate or STPP) from soluble complexes with $ C{a^{+2}},\ M{g^{+2}} $ present in hard water.
BETA
