Electrolysis is a reaction caused of

Options

A. light
B. heat
C. electricity
D. both heat and light

Answer

**Step-by-Step Solution:**

1. **Understanding Electrolysis:**
Electrolysis is a chemical process that uses electricity to drive a non-spontaneous reaction. It involves the breakdown of a compound into its individual elements or ions.

2. **Components of Electrolysis:**
In an electrolytic cell, there are two electrodes:
- **Anode:** The positive electrode where oxidation occurs.
- **Cathode:** The negative electrode where reduction occurs.

3. **Connection to Power Source:**
The electrodes are connected to an external power source, typically a battery. The positive terminal of the battery connects to the anode, and the negative terminal connects to the cathode.

4. **Migration of Ions:**
When electricity is applied, cations (positively charged ions) migrate towards the cathode, while anions (negatively charged ions) migrate towards the anode. For example, in the case of sodium chloride (NaCl), Na⁺ will move towards the cathode, and Cl⁻ will move towards the anode.

5. **Reactions at Electrodes:**
- **At the Anode:** Oxidation occurs. For example, Cl⁻ ions lose electrons to form Cl₂ gas.
- **At the Cathode:** Reduction occurs. For example, Na⁺ ions gain electrons to form sodium metal (Na).

6. **Conclusion:**
Therefore, electrolysis is a reaction caused by the application of electricity, which facilitates the movement of ions and the subsequent oxidation and reduction reactions at the electrodes.

---