Question

Which of the following is most effective in coagulating a ferric hydroxide sol.

• A. KCl
• B.
• C. $\mathrm { K } _ { 2 } \mathrm { SO } _ { 4 }$
• D. $K _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right]$

Answer 1

Answer: (D)

$K _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right]$

Answer 2

Sol is most effective in coagulating a ferric hydroxide sol.