Which of the following statement is not correct ?

Options

A. Lead(II) chloride is soluble in hot water and resppears on cooding
B. in dilute HCI th e solubility of `PbCI_(2`) is higher then the hot water
C. in concetrated `HCI,PbCI_(2)` is insoluble
D. Lead (II) chloride forms the complex are having white ppt ?

Explanation

To determine which statement is not correct regarding lead chloride, we need to analyze each statement provided.

### Step-by-Step Solution:

1. **Analyze the first statement**: "Lead chloride is soluble in hot water and reappears on cooling."
- Lead chloride (PbCl2) is indeed soluble in hot water due to the increased kinetic energy of the molecules, which allows it to dissolve. When the solution cools, lead chloride precipitates out of the solution.
- **Conclusion**: This statement is **correct**.

2. **Analyze the second statement**: "In dilute HCl, the solubility of lead chloride is higher than in hot water."
- Lead chloride is not more soluble in dilute HCl than in hot water. In fact, it is generally less soluble in dilute HCl because the chloride ions from HCl can lead to the formation of complexes that reduce solubility.
- **Conclusion**: This statement is **not correct**.

3. **Analyze the third statement**: "Lead(II) chloride forms a complex having a white precipitate."
- Lead(II) chloride can indeed form complexes, and these complexes can appear as white precipitates, especially when reacting with certain ligands.
- **Conclusion**: This statement is **correct**.

4. **Analyze the fourth statement**: "In concentrated HCl, lead chloride is soluble."
- Lead chloride is generally insoluble in concentrated HCl. The presence of a high concentration of chloride ions does not increase its solubility significantly.
- **Conclusion**: This statement is **not correct**.

### Final Conclusion:
The statements that are not correct are the second and fourth statements. However, since the question asks for a single statement that is not correct, the second statement is the most direct answer.

### Answer:
The statement that is not correct is: "In dilute HCl, the solubility of lead chloride is higher than in hot water."

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