An aqueous solution of a mixture contains `Br^(-)` and `I^(-)` ions. On passing `Cl_(2)` gas and adding `CHCl_(3)`, then organic layer will acquire :

Options

A. violet colour
B. reddish brown colour
C. colourless
D. blue colour

Explanation

To solve the problem, we need to analyze the reactions occurring when chlorine gas (`Cl2`) is passed through an aqueous solution containing bromide ions (`Br^(-)`) and iodide ions (`I^(-)`), followed by the addition of chloroform (`CHCl3`).

### Step-by-Step Solution:

1. **Identify the Ions Present:**
The solution contains bromide ions (`Br^(-)`) and iodide ions (`I^(-)`).

2. **Reaction with Chlorine Gas:**
When chlorine gas (`Cl2`) is passed through the solution, it reacts with the bromide and iodide ions. The reactions can be represented as follows:
- For bromide ions:
\[ Cl_2 + 2Br^- \rightarrow 2Cl^- + Br_2 \]
Here, bromide ions are oxidized to bromine (`Br2`).

- For iodide ions:
\[ Cl_2 + 2I^- \rightarrow 2Cl^- + I_2 \]
In this reaction, iodide ions are oxidized to iodine (`I2`).

3. **Formation of Iodine and Bromine:**
After passing `Cl2`, both `Br2` and `I2` are formed in the solution. Iodine (`I2`) is known to have a characteristic violet color when dissolved in organic solvents.

4. **Addition of Chloroform:**
When chloroform (`CHCl3`) is added to the solution, it creates two layers: an aqueous layer and an organic layer. Iodine is more soluble in chloroform than in water, thus it will preferentially move into the organic layer.

5. **Color of the Organic Layer:**
The presence of iodine in the organic layer will impart a violet color to it. Therefore, the organic layer will acquire a violet color due to the dissolved iodine.

### Final Answer:
The organic layer will acquire a **violet color**.

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