According to Hardy schultz law, the floculating power of an ion increases with :-

Options

A. Decreases in size
B. Increase in size
C. Decrease in charge
D. Increase in charge

Answer

**Step-by-Step Solution:**

1. **Understanding Hardy-Schulze Law**: The Hardy-Schulze law states that the flocculating power of an ion is related to its charge. Flocculating power refers to the ability of an ion to cause the coagulation of colloidal particles.

2. **Definition of Flocculating Power**: Flocculating power can be defined as the minimum concentration of an electrolyte required to cause coagulation of a colloidal solution. This is often measured in millimoles.

3. **Factors Affecting Flocculating Power**: According to Hardy-Schulze law, the flocculating power of an ion increases with the increase in the charge of the ion. This means that ions with higher charges are more effective at causing coagulation.

4. **Conclusion**: Based on the above points, we can conclude that the flocculating power of an ion increases with an increase in its charge. Therefore, the correct answer to the question is option D.

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