`CH_(3)CH_(2)NH_(2)` is soluble in :-

Options

A. Dilute HCl
B. `CuSO_(4)` solution
C. `AgNO_(3)`
D. None of these

Answer

To determine the solubility of ethylamine (CH₃CH₂NH₂), we need to analyze its structure and the nature of the solvents provided in the options.

### Step-by-Step Solution:

1. **Identify the Structure of Ethylamine**:
- Ethylamine is a primary amine with the formula CH₃CH₂NH₂. It contains an amine group (-NH₂) attached to an ethyl group (C₂H₅).

2. **Understand the Solubility of Amines**:
- Amines, particularly primary and secondary amines with lower molecular weights, tend to be soluble in water due to their ability to form hydrogen bonds. Ethylamine, being a small primary amine, can form hydrogen bonds with water molecules.

3. **Evaluate the Solvents Provided**:
- The options given are:
- a) Dilute HCl
- b) CVSO₄ solution
- c) AZNU₃ solution
- d) None of these

4. **Analyze the Solubility in Dilute HCl**:
- Ethylamine can react with dilute HCl to form ethylammonium chloride (CH₃CH₂NH₃Cl). This reaction involves the protonation of the amine group, which enhances its solubility in the acidic solution due to the formation of a charged species that can interact favorably with water.

5. **Consider the Other Options**:
- For CVSO₄ (Copper(II) sulfate) and AZNU₃ (a hypothetical compound), there is no significant interaction expected that would enhance the solubility of ethylamine. Thus, these options are less likely to be correct.

6. **Conclusion**:
- Based on the analysis, ethylamine is soluble in dilute HCl due to the formation of hydrogen bonds and the protonation of the amine group.

### Final Answer:
Ethylamine (CH₃CH₂NH₂) is soluble in **dilute HCl**.

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