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Fe(OH)(3) when treated with FeCl(3) solu...

`Fe(OH)_(3)` when treated with `FeCl_(3)` solution gives a reddish–brown solution. The process involved is:

A

Dispersion

B

Exchange of solvent

C

Peptization

D

None of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the reaction of `Fe(OH)3` when treated with `FeCl3` solution, we can break it down into the following steps: ### Step 1: Understand the Initial Reaction When `Fe(OH)3` (iron(III) hydroxide) is treated with `FeCl3` (ferric chloride), it is important to recognize that `Fe(OH)3` is a precipitate. ### Step 2: Identify the Ions Involved In the solution, `FeCl3` dissociates into `Fe^3+` ions and `Cl^-` ions. The `Fe^3+` ions are the key players in the reaction. ### Step 3: Adsorption Process The `Fe^3+` ions from the `FeCl3` solution are adsorbed onto the surface of the `Fe(OH)3` precipitate. This is a crucial step because it leads to the formation of a colloidal solution. ### Step 4: Formation of Colloidal Solution As the `Fe^3+` ions are adsorbed onto the `Fe(OH)3` particles, the charged particles repel each other due to the same charge on their surfaces. This repulsion prevents the particles from aggregating and allows them to remain dispersed in the solution, thus forming a colloidal solution. ### Step 5: Define Peptization The process of converting a freshly prepared precipitate into a colloidal form by the addition of an electrolyte (in this case, `FeCl3`) is known as peptization. ### Step 6: Conclusion Therefore, the reddish-brown solution formed when `Fe(OH)3` is treated with `FeCl3` is a colloidal solution resulting from the peptization process. ### Final Answer The process involved is **peptization**. ---
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