Question

[Ag I]I- colloidal sol. can be coagulated by the addition of a suitable cation, 1 molof[Ag I] I requiresmol. of Ag NO,, Pb (NOx), and Fe (NO2), asA) 1. 1.1B) 1, 2, 31101.11C) 1.2 3D) 6, 3,2​

Answer 1

Answer:

[Ag I]I- colloidal sol. can be coagulated by the addition of a suitable cation, 1 molof[Ag I] I requires mol.

Answer 2

[Ag I]I- colloidal sol. can be coagulated by the addition of a suitable cation, 1 molof[Ag I] I requires mol.

Explanation:

1.Negatively charged sol, AgI/I−  is formed when AgNO3 solution is added to KI solution.

2.When AgNO3 solution is added to KI solution, the ppt of AgI adsorbs negative charge i.e. it adsorbs I- from dispersion medium resulting in a negative sol which can be represented as AgI/I-.

3.A sol is a colloid made out of solid particles in a continuous liquid medium. Sols are quite stable and show the Tyndall effect. Examples include blood, pigmented ink, cell fluids, paint, antacids and mud.

4.When silver nitrate is reacted with excess potassium iodide, the colloidal particles formed get released towards the anode. Thus, when excess of AgNO3is treated with KI solution, AgI forms a positively charged sol.