JEE PYQ: Surface Chemistry Question 33
Question 33 - 2019 (09 Jan Shift 2)
Type: MCQ
For coagulation of arsenious sulphide sol, which one of the following salt solution will be most effective?
(a) $\text{BaCl}_2$
(b) $\text{AlCl}_3$
(c) NaCl
(d) $\text{Na}_3\text{PO}_4$
Show Answer
Answer: (a)
Solution
For coagulation of a negatively charged arsenious sulphide sol, the cation which is in higher oxidation state will be most effective. $\text{Al}^{3+}$ has the highest charge among the cations.
BETA
