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The charge on As(2)S(3) sol is due to:...

The charge on `As_(2)S_(3)` sol is due to:

A

`H^(+)` ion

B

`OH^(-)` ion

C

`O^(-2)` ion

D

`S^(-2)` ion

Text Solution

AI Generated Solution

The correct Answer is:
To determine the charge on the `As_(2)S_(3)` sol, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Nature of the Substance**: - `As_(2)S_(3)` is a colloidal sol, which means it consists of small particles dispersed in a medium. **Hint**: Remember that colloids can be classified based on the size of the particles and their interactions with the dispersing medium. 2. **Understand the Concept of Adsorption**: - In colloidal systems, the charge on the particles often arises from the adsorption of ions from the surrounding medium onto the surface of the colloidal particles. **Hint**: Adsorption is a surface phenomenon that can lead to a net charge on the colloidal particles. 3. **Analyze the Components of `As_(2)S_(3)`**: - The compound consists of arsenic (As) and sulfide (S) ions. When `As_(2)S_(3)` is in a colloidal state, it interacts with ions in the solution. **Hint**: Consider the ions that could be present in the solution and how they might interact with the colloidal particles. 4. **Determine the Source of Charge**: - The charge on the `As_(2)S_(3)` sol is primarily due to the adsorption of sulfide ions (`S^(2-)`). These negatively charged ions adhere to the surface of the colloidal particles, imparting a net negative charge to the sol. **Hint**: Focus on the ions that are likely to adsorb onto the surface of the colloidal particles and contribute to the overall charge. 5. **Eliminate Other Options**: - The other options provided (H+, OH-, O2-) do not contribute to the charge on `As_(2)S_(3)` sol. H+ and OH- are not adsorbed in significant amounts to create a net charge, and O2- is not relevant in this context. **Hint**: Cross-check the relevance of each ion in relation to the colloidal system. 6. **Conclusion**: - Therefore, the charge on the `As_(2)S_(3)` sol is due to the adsorption of `S^(2-)` ions. **Final Answer**: The charge on `As_(2)S_(3)` sol is due to the adsorption of `S^(2-)` ions.
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