The colour of `(NH_(4))_(2)SO_(4)Fe_(2)(SO_(4))_(3).24H_(2)O` is

Options

A. White
B. Green
C. Violet
D. Blue

Answer

To determine the color of the compound \((NH_4)_2SO_4Fe_2(SO_4)_3 \cdot 24H_2O\), we can follow these steps:

### Step 1: Identify the Components of the Compound
The compound consists of ammonium sulfate \((NH_4)_2SO_4\) and iron(III) sulfate \(Fe_2(SO_4)_3\), along with water of crystallization (24 water molecules).

### Step 2: Dissociation in Water
When this compound is dissolved in water, it dissociates into its constituent ions:
- Ammonium ions: \(NH_4^+\)
- Sulfate ions: \(SO_4^{2-}\)
- Iron(III) ions: \(Fe^{3+}\)

### Step 3: Determine the Color of Iron(III) Ions
The key component that contributes to the color of the solution is the iron(III) ion \(Fe^{3+}\). Iron(III) ions typically impart a yellow to brown color in solution. However, when combined with other ions, such as sulfate, the overall color can be influenced.

### Step 4: Identify the Color of the Complex
In the case of the compound \((NH_4)_2SO_4Fe_2(SO_4)_3 \cdot 24H_2O\), the presence of \(Fe^{3+}\) ions in a sulfate environment can lead to a greenish color in some complexes. This is due to the formation of specific coordination complexes in solution.

### Conclusion
Based on the dissociation and the behavior of the iron(III) ions in the presence of sulfate ions, the color of the compound \((NH_4)_2SO_4Fe_2(SO_4)_3 \cdot 24H_2O\) is green.

### Final Answer
The color of \((NH_4)_2SO_4Fe_2(SO_4)_3 \cdot 24H_2O\) is green.

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