Which of the following salts solution is/are acidic in nature

Options

A. `NaNO_(3)`
B. `LiCl`
C. `BeCl_(2)`
D. `KCN`

Explanation

To determine which of the given salt solutions are acidic in nature, we need to analyze each salt and its behavior when dissolved in water.

### Step-by-Step Solution:

1. **Understanding the Nature of Salts**:
- Salts can be classified based on the strength of the acids and bases from which they are derived.
- A salt formed from a strong acid and a strong base will be neutral (pH = 7).
- A salt formed from a strong acid and a weak base will be acidic (pH < 7).
- A salt formed from a weak acid and a strong base will be basic (pH > 7).
- A salt formed from a weak acid and a weak base can be neutral or slightly acidic/basic depending on the relative strengths.

2. **Analyzing Each Salt**:
- **NaNO3**:
- Sodium nitrate is derived from sodium hydroxide (a strong base) and nitric acid (a strong acid).
- Therefore, NaNO3 solution is neutral (pH = 7).

- **LiCl**:
- Lithium chloride is derived from lithium hydroxide (a weak base) and hydrochloric acid (a strong acid).
- Therefore, LiCl solution is acidic (pH < 7).

- **BeCl2**:
- Beryllium chloride is derived from beryllium hydroxide (a weak base) and hydrochloric acid (a strong acid).
- Therefore, BeCl2 solution is also acidic (pH < 7).

- **KCN**:
- Potassium cyanide is derived from potassium hydroxide (a strong base) and hydrocyanic acid (a weak acid).
- Therefore, KCN solution is basic (pH > 7).

3. **Conclusion**:
- From the analysis:
- NaNO3: Neutral (not acidic)
- LiCl: Acidic
- BeCl2: Acidic
- KCN: Basic (not acidic)
- The salts that produce acidic solutions are **LiCl and BeCl2**.

### Final Answer:
The salt solutions that are acidic in nature are **LiCl and BeCl2**.