An ionizing solvent has

Options

A. Low value of dielectric constant
B. High value of dielectric constant
C. A dielectric constant equal to one
D. Has a high melting point

Answer

To solve the question regarding the properties of an ionizing solvent, we will analyze the characteristics of such solvents, particularly focusing on their dielectric constant and melting point.

### Step-by-Step Solution:

1. **Understanding Ionizing Solvents**:
- An ionizing solvent is one that can dissociate solutes into ions. A common example is water, which can ionize salts like NaCl into Na⁺ and Cl⁻ ions.

2. **Dielectric Constant**:
- The dielectric constant (ε) is a measure of a substance's ability to insulate charges from each other. A high dielectric constant indicates that the solvent can effectively separate and stabilize ions in solution.
- For ionizing solvents, a **high dielectric constant** is essential because it allows the solvent to stabilize the ions produced during dissociation. This prevents the ions from recombining.

3. **Melting Point**:
- The melting point of an ionizing solvent is typically low. This is because a solvent that can ionize must be able to dissociate into ions easily, which is more feasible at lower temperatures.
- If the melting point is high, the solvent may not be able to ionize effectively, as it would remain in a solid state or require more energy to dissociate.

4. **Conclusion**:
- Based on the properties discussed, an ionizing solvent should have a **high dielectric constant** and a **low melting point**. This allows it to effectively dissolve and ionize solutes, maintaining the stability of the ions in solution.

### Final Answer:
The property of an ionizing solvent is that it has a **high dielectric constant**.