Identify the weak electrolyte from the following :

Options

A. Sodium chloride solution
B. Dilute hydrochloric acid
C. Dilute sulphuric acid
D. Aqueous acetic acid

Explanation

To identify the weak electrolyte from the given options, we need to understand the definitions and characteristics of weak and strong electrolytes.

### Step-by-Step Solution:

1. **Define Electrolytes**:
- Electrolytes are substances that dissociate into ions when dissolved in water. They can be categorized into two types: strong electrolytes and weak electrolytes.

2. **Understand Strong Electrolytes**:
- Strong electrolytes completely dissociate into ions in an aqueous solution. This means that 100% of the substance breaks down into its constituent ions. Common examples include strong acids (like hydrochloric acid, sulfuric acid) and salts (like sodium chloride).

3. **Understand Weak Electrolytes**:
- Weak electrolytes only partially dissociate into ions in an aqueous solution. This means that not all of the substance breaks down into ions. An example of a weak electrolyte is acetic acid (also known as ethanoic acid).

4. **Analyze the Given Options**:
- From the options provided, we need to identify which one is a weak electrolyte. The strong electrolytes mentioned in the transcript include hydrochloric acid (HCl), sulfuric acid (H2SO4), and sodium chloride (NaCl).

5. **Identify the Weak Electrolyte**:
- The only option that is a weak electrolyte among the choices is acetic acid (CH3COOH). It does not fully dissociate in solution, making it the correct answer.

### Conclusion:
The weak electrolyte from the given options is **acetic acid (CH3COOH)**.

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