Question

Peptization is a :

• A. process of converting a colloidal solution into precipitate
• B. process of converting precipitate into colloidal solution
• C. process of converting soluble particles to form colloidal solution
• D. process of bringing colloidal molecule into solution

Answer 1

The Correct Option is B

The question provided pertains to the process of "Peptization," a concept in chemistry related to colloidal solutions. Let's explore this concept in detail to identify the correct answer from the given options.

Understanding Peptization

Peptization is a process in colloidal chemistry. It involves the conversion of a precipitate into a colloidal solution by the addition of a suitable electrolyte. Here's how the process works:

1. When a precipitate is formed, it consists of aggregated particles that are often too large to form a stable colloidal solution.
2. By adding a small amount of an electrolyte, these particles acquire a charge, usually the same charge, which creates repulsion between them.
3. This repulsion prevents the particles from aggregating again, and they become dispersed throughout the solvent, forming a stable colloidal solution.

Evaluating the Options

1. The first option, "process of converting a colloidal solution into precipitate," describes coagulation, not peptization.
2. The second option, "process of converting precipitate into colloidal solution," correctly defines peptization, aligning with our explanation above.
3. The third option, "process of converting soluble particles to form colloidal solution," is incorrect because peptization specifically involves precipitates, not soluble particles.
4. The fourth option, "process of bringing colloidal molecule into solution," is vague and doesn't precisely describe peptization.

Conclusion

Based on the detailed explanation of peptization, the correct answer is the second option: "process of converting precipitate into colloidal solution."