Question
Question: Arsenic (III) sulphide forms a sol with a negative charge. Which of the following ionic substances s...
Arsenic (III) sulphide forms a sol with a negative charge. Which of the following ionic substances should be most effective in coagulating the sol ?
A
KCl
B
MgCl2
C
Al2(SO4)3
D
Na3PO4
Answer
Na3PO4
Explanation
Solution
More the charge on cation, more the effectiveness of the electrolyte.