Which of the following will react with water?

Options

A. `CHCl_(3)`
B. `Cl_(3)C CHO`
C. `C Cl_(4)`
D. None of these

Answer

To determine which of the given compounds will react with water, we will analyze each option based on their chemical properties and reactivity.

### Step-by-Step Solution:

1. **Identify the Compounds**: The question presents three compounds: chloroform (CHCl3), trichloroacetaldehyde (CCl3CHO), and carbon tetrachloride (CCl4). We need to evaluate their reactivity with water.

2. **Analyze Chloroform (CHCl3)**:
- Chloroform is a heavy liquid that does not react with water. When mixed, it forms two separate layers due to its density being higher than that of water.
- **Conclusion**: Chloroform does not react with water.

3. **Analyze Trichloroacetaldehyde (CCl3CHO)**:
- This compound can react with water. When it reacts, it forms chloral hydrate (CCl3CHOH) which is a stable product.
- The reaction can be represented as:
\[ \text{CCl}_3\text{CHO} + \text{H}_2\text{O} \rightarrow \text{CCl}_3\text{CHOH} \text{ (chloral hydrate)} \]
- The stability of chloral hydrate is attributed to intramolecular hydrogen bonding.
- **Conclusion**: Trichloroacetaldehyde reacts with water.

4. **Analyze Carbon Tetrachloride (CCl4)**:
- Carbon tetrachloride does not react with water directly. It can react with steam, producing cobalt(II) chloride (CoCl2) and hydrochloric acid (HCl).
- The reaction is:
\[ \text{CCl}_4 + \text{H}_2\text{O (steam)} \rightarrow \text{CoCl}_2 + 2 \text{HCl} \]
- **Conclusion**: Carbon tetrachloride does not react with liquid water.

5. **Final Conclusion**:
- Among the given options, only **trichloroacetaldehyde (CCl3CHO)** reacts with water, forming a stable product (chloral hydrate).

### Answer:
The compound that will react with water is **trichloroacetaldehyde (CCl3CHO)**.

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