Which of these can be correctly said to be a strong electrolyte ?

Options

A. Urea
B. `NH_(4)OH`
C. Sugar
D. Sodium acetate

Answer

To determine which of the given compounds can be correctly classified as a strong electrolyte, we need to analyze each option based on their ability to ionize in solution. A strong electrolyte is a substance that completely dissociates into ions when dissolved in water, allowing the solution to conduct electricity effectively.

### Step-by-Step Solution:

1. **Understanding Strong Electrolytes**:
- Strong electrolytes are substances that completely ionize in solution, producing a high concentration of ions. This allows them to conduct electricity well.

2. **Analyzing Each Option**:
- **Option 1: Urea (NH2CONH2)**:
- Urea is an organic compound and does not ionize in solution. It remains as neutral molecules and does not produce ions. Therefore, it is not a strong electrolyte.

- **Option 2: Ammonium Hydroxide (NH4OH)**:
- Ammonium hydroxide is a weak base. It only partially ionizes in solution, producing a small amount of ions. Thus, it is classified as a weak electrolyte, not a strong electrolyte.

- **Option 3: Sugar (C12H22O11)**:
- Sugar is a covalent compound that dissolves in water but does not dissociate into ions. It remains as intact molecules in solution and does not conduct electricity. Therefore, it is classified as a non-electrolyte.

- **Option 4: Sodium Acetate (CH3COONa)**:
- Sodium acetate is a salt formed from a strong base (sodium hydroxide) and a weak acid (acetic acid). When dissolved in water, it dissociates completely into sodium ions (Na⁺) and acetate ions (CH3COO⁻). This complete ionization allows it to conduct electricity effectively, classifying it as a strong electrolyte.

3. **Conclusion**:
- Among the given options, **sodium acetate (Option 4)** is the only compound that can be correctly classified as a strong electrolyte because it completely ionizes in solution.

### Final Answer:
**The correct answer is Option 4: Sodium Acetate (CH3COONa).**