`K_(3)[Fe(CN)_(6)]+FeCl_(3) to Fe[Fe(CN)_(6)]darr`

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 between \( K_3[Fe(CN)_6] \) and \( FeCl_3 \) to form \( Fe[Fe(CN)_6] \), we need to analyze the products formed and their characteristics. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Reactants
The reactants in the reaction are:
- \( K_3[Fe(CN)_6] \) (Potassium hexacyanoferrate(II))
- \( FeCl_3 \) (Ferric chloride)

### Step 2: Determine the Reaction Type
This reaction involves the formation of a complex. The \( K_3[Fe(CN)_6] \) acts as a ligand that coordinates with the iron ion from \( FeCl_3 \).

### Step 3: Write the Reaction
The reaction can be written as:
\[ K_3[Fe(CN)_6] + FeCl_3 \rightarrow Fe[Fe(CN)_6] + 3KCl \]

### Step 4: Analyze the Product
The product formed is \( Fe[Fe(CN)_6] \), which is known as a complex ion.

### Step 5: Determine the Solubility of the Product
The complex \( Fe[Fe(CN)_6] \) is soluble in water, meaning it will not precipitate out of solution.

### Step 6: Identify the Color of the Product
The complex \( Fe[Fe(CN)_6] \) is known to have a brown color. Therefore, when it is formed in solution, it will impart a brown color to the solution.

### Step 7: Conclusion
Since the product is a soluble complex and has a brown color, the answer to the question is that the solution will be colored (specifically brown).

### Final Answer
The solution will be a colored solution (brown).

---