Chemistry - Surface Chemistry Question with Solution | TestHub

(P) ${\mathrm{AgNO}}_3+$ Slight excess KI

(1) Positively charged sol is formed

(Q) $\mathrm{KI}+$ Slight excess ${\mathrm{AgNO}}_3$

(2) Coagulating power is ${\mathrm{Al}}^{3+}>{\mathrm{Na}}^{+}$

(R) ${\mathrm{FeCl}}_3$ + Hot water

(3) Coagulating value of ${\mathrm{K}}_4\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]<$ NaCl

(S) ${\mathrm{FeCl}}_3+\mathrm{NaOH}$ solution excess

(4) Negatively charged sol is formed.

(5) Sol are stable towards addition of electrolytes.