What is the colour of the ppt. formed when sodium hydroxide solution is added to ferric salt?

Options

A. Dirty green
B. White
C. Brown
D. Reddish brown

Explanation

To determine the color of the precipitate formed when sodium hydroxide (NaOH) solution is added to a ferric salt, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are sodium hydroxide (NaOH) and a ferric salt. A common ferric salt is ferric chloride (FeCl3).

2. **Write the Reaction**:
- When sodium hydroxide reacts with ferric chloride, the reaction can be represented as:
\[ \text{FeCl}_3 + 3 \text{NaOH} \rightarrow \text{Fe(OH)}_3 + 3 \text{NaCl} \]
- Here, ferric chloride reacts with sodium hydroxide to form ferric hydroxide and sodium chloride.

3. **Identify the Product**:
- The product formed is ferric hydroxide (Fe(OH)3).

4. **Determine the Color of the Precipitate**:
- Ferric hydroxide (Fe(OH)3) is known to form a precipitate that is reddish brown in color.

5. **Conclusion**:
- Therefore, the color of the precipitate formed when sodium hydroxide solution is added to ferric salt is **reddish brown**.

### Final Answer:
The color of the precipitate formed is **reddish brown**.

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