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Answer the following questions : (i) W...

Answer the following questions :
(i) Which of the following electrolytes is most effective for the coagulation of `AgI//Ag^(+)` sol ?
a. ` MgCl_(2), K_(2)SO_(4), K_(4)[Fe(CN)_(6)]`
(b) What happens when a freshly precipitated ` Fe(OH)_(3)` is shaken with a little amount of dilute solution of `FeCl_(3)`.
(c) Out of sulphur sol and proteins, which one forms macromolecular colloids ?

Text Solution

Verified by Experts

(a) ` K_(4) [ Fe(CN)_(6)]`
(b) ` Fe(OH)_(3)` is converted into colloidal state by preferential adsorption of `Fe^(3+)` ions.
(c) Proteins
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