An electrolyte is

Options

A. a metal
B. a solution
C. a liquid that conducts current
D. all of above

Answer

### Step-by-Step Solution:

1. **Definition of Electrolyte**:
An electrolyte is defined as a substance that, when dissolved in a solvent (usually water), produces ions and is capable of conducting electricity.

2. **Characteristics of Electrolytes**:
- Electrolytes are typically ionic compounds that dissociate into positive and negative ions when dissolved in a solution.
- They can conduct electric current due to the movement of these ions.

3. **Examples of Electrolytes**:
Common examples of electrolytes include:
- Sodium chloride (NaCl) in water, which dissociates into Na⁺ and Cl⁻ ions.
- Acids like hydrochloric acid (HCl), which dissociates into H⁺ and Cl⁻ ions.
- Bases like sodium hydroxide (NaOH), which dissociates into Na⁺ and OH⁻ ions.

4. **Role of Electrolytes in Electrolysis**:
In the process of electrolysis, an electrolyte solution is placed in a container (like a beaker) with two electrodes connected to a battery. When electric current is passed through the solution:
- The electrolyte dissociates into ions.
- Positive ions move towards the negative electrode (cathode), and negative ions move towards the positive electrode (anode).
- This movement of ions allows for chemical reactions to occur at the electrodes.

5. **Conclusion**:
Therefore, an electrolyte is a liquid that conducts electricity by dissociating into ions when current passes through it. This property is essential for various applications, including electrolysis and batteries.