During electro-osmosis of `Fe(OH)_(3)` sol
a. Sol particles move towards anode
b. Sol particles move towards cathode
c. The dispersion medium move towards anode
d. The sol particles do not move in either direction

Options

A. sol particles move towards anode
B. sol particles move towards carhode
C. the dispersion medium move towards anode
D. the dispersion medium moves towards cathode

Answer

To solve the question regarding the electro-osmosis of `Fe(OH)_(3)` sol, we need to understand the behavior of the sol particles and the dispersion medium under an electric field.

### Step-by-Step Solution:

1. **Understanding Electro-osmosis**:
- Electro-osmosis is the movement of liquid (dispersion medium) induced by an electric field across a porous material or a colloidal system.

2. **Identifying Charges**:
- In the case of `Fe(OH)_(3)` sol, the sol particles (which are negatively charged) will influence the movement of the surrounding dispersion medium.

3. **Direction of Movement**:
- When an electric field is applied, the negatively charged sol particles will attract the positively charged ions in the dispersion medium towards the anode (positive electrode).
- As a result, the dispersion medium will move towards the anode due to the attraction of the positive ions.

4. **Analyzing the Options**:
- a. Sol particles move towards anode: This is incorrect since the sol particles are negatively charged and will not move towards the anode.
- b. Sol particles move towards cathode: This is also incorrect for the same reason.
- c. The dispersion medium moves towards anode: This is correct as explained above.
- d. The sol particles do not move in either direction: This is incorrect because the sol particles do influence the movement of the dispersion medium.

5. **Conclusion**:
- Based on the analysis, the correct answer is **c. The dispersion medium moves towards anode**.

### Final Answer:
**c. The dispersion medium moves towards anode.**

---