Question
Question: The best coagulant for the precipitation of Fe(OH)<sub>3</sub> is-...
The best coagulant for the precipitation of Fe(OH)3 is-
A
Na3PO4
B
NaNO3
C
Na2SO4
D
NaCl
Answer
Na3PO4
Explanation
Solution
PO43− has maximum coagulating power for Fe(OH)3, a positively charged sol.