`As_(2)O_(3)+3H_(2)S rarrAs_(2)S_(3)(Sol)+3H_(3)O` , the principle involved in the preparation of above colloidal solution

Options

A. Oxidation
B. Reduction
C. Double displacement
D. Hydrolysis

Answer

To determine the principle involved in the preparation of the colloidal solution from the reaction given:

**Reaction:**
\[ \text{As}_2\text{O}_3 + 3\text{H}_2\text{S} \rightarrow \text{As}_2\text{S}_3(\text{Sol}) + 3\text{H}_2\text{O} \]

### Step-by-Step Solution:

1. **Identify the Reactants and Products:**
- The reactants are Arsenic Oxide (\(\text{As}_2\text{O}_3\)) and Hydrogen Sulfide (\(\text{H}_2\text{S}\)).
- The products are Arsenic Sulfide (\(\text{As}_2\text{S}_3\)) and Water (\(\text{H}_2\text{O}\)).

2. **Determine the Type of Reaction:**
- In this reaction, Arsenic Oxide reacts with Hydrogen Sulfide to form Arsenic Sulfide and Water.
- This can be classified as a double displacement reaction because the components of the reactants exchange partners to form new products.

3. **Analyze the Oxidation States:**
- The oxidation state of Arsenic in \(\text{As}_2\text{O}_3\) is +3.
- The oxidation state of Sulfur in \(\text{H}_2\text{S}\) is -2.
- In the product \(\text{As}_2\text{S}_3\), Arsenic remains at +3 and Sulfur remains at -2.
- There is no change in the oxidation states of the elements involved, indicating that oxidation and reduction are not taking place.

4. **Conclude the Principle:**
- Since the reaction involves the exchange of ions between the reactants to form new products without any change in oxidation states, it is classified as a double displacement reaction.
- Thus, the principle involved in the preparation of the colloidal solution of Arsenic Sulfide is **Double Displacement**.

### Final Answer:
The principle involved in the preparation of the colloidal solution is **Double Displacement**.

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