Explain why does ferric hydroxide sol get coagulate on addition of solution of potassium sulphate ?

Explain why dose feeric hydroxide sol get coagulate on addition of solution of potassium sulphate ?

Explain the following observation: a. A beam of light passing through a colloidal solution has a visible path. Passing an electric currenet through a colloidal solution removes colloidal particles from it. c. Ferric hydroxide sol coagulates on addition of potassium sulphate.

Convey the following information in the form of balanced chemical equations (i) An aqueous of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form precipitate of ferrous hydroxide and sodium sulphate remains in solution. (ii) Potassium metal reacts with water to give potassium hydroxide solution and hydrogen gas is evolved in the reaction. (iii) Solid potassium chlorate upon heating forms potassium chloride and liberates oxygen gas. (iv) An aqueous solution of aluminium chloride reacts with an aqueous solution of ammonium hydroxide solution to form aluminium hydroxide and ammonium chloride.

What happens when freshly precipitated ferric hydroxide is treated with dilute solution of ferric chloride ?

Classify the following sols according to theirs charges: (a) gold sol (b) ferric hydroxide sol (c) gelatine (d) blood (e) sulphur (f) arsenious sulphide (g) titanium oxide.

Classify the following sols according to their charges : (a) gold sol (b) ferric hydroxide sol (c) gelatine (d) blood (e) sulphur (f) arsenious sulphide (g) titanium oxide.