`[Cr(NH_(3))_(6)]^(3+)+6HCl to Cr^(3+)(aq)+6NH_(4)Cl`

Options

A. For coloured ppt./Black ppt
B. For coloured solution.
C. for clear/colourless solution
D. For white ppt.

Answer

To solve the question regarding the reaction of `[Cr(NH₃)₆]³⁺ + 6HCl → Cr³⁺(aq) + 6NH₄Cl`, we need to analyze the reactants and products to determine the nature of the resulting solution.

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactant is `[Cr(NH₃)₆]³⁺`, which is a complex ion containing chromium in a +3 oxidation state coordinated with six ammonia (NH₃) ligands.
- The other reactant is hydrochloric acid (HCl).
- The products are `Cr³⁺(aq)`, which is the chromium ion in aqueous solution, and `6NH₄Cl`, which is ammonium chloride.

2. **Determine the Nature of the Chromium Ion**:
- The chromium ion `Cr³⁺` is known to be colored. Specifically, it typically appears green in solution.

3. **Analyze the Ammonium Chloride**:
- `NH₄Cl` is a soluble salt that dissociates in water to give `NH₄⁺` and `Cl⁻` ions. It does not contribute to any color in the solution.

4. **Consider the Overall Reaction**:
- The reaction involves the formation of `Cr³⁺` ions in solution along with `NH₄Cl`. Since `Cr³⁺` is colored, the resulting solution will also be colored.

5. **Conclusion**:
- Since the solution contains `Cr³⁺`, which is colored, we can conclude that the reaction will produce a colored solution. There are no indications of a precipitate being formed, as there are no solid products or downward arrows in the reaction.

### Final Answer:
The reaction will form a **colored solution**.

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