When molten NaCl is electrolysed by using inert electrode, the product obtained al cathode is

Options

A. Na
B. `Cl_2`
C. `H_2`
D. Na Hg amalgam

Answer

To determine the product obtained at the cathode when molten NaCl is electrolyzed using inert electrodes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrolysis of Molten NaCl**:
- When sodium chloride (NaCl) is molten, it dissociates into its ions: Na⁺ (sodium ions) and Cl⁻ (chloride ions).

2. **Setting Up the Electrolysis**:
- In the electrolysis setup, we have an anode (positive electrode) and a cathode (negative electrode) connected to a power source.

3. **Identifying the Reactions**:
- At the cathode, reduction occurs (gain of electrons). The possible ions that can be reduced are Na⁺ and Cl⁻.
- Na⁺ can gain an electron to become sodium metal (Na), while Cl⁻ can be oxidized to form chlorine gas (Cl₂) at the anode.

4. **Reduction Reaction at the Cathode**:
- The reduction reaction at the cathode can be represented as:
\[ \text{Na}^+ + e^- \rightarrow \text{Na (s)} \]
- This means that sodium ions (Na⁺) gain electrons and are reduced to solid sodium (Na).

5. **Conclusion**:
- Therefore, the product obtained at the cathode during the electrolysis of molten NaCl is solid sodium (Na).

### Final Answer:
The product obtained at the cathode when molten NaCl is electrolyzed is solid sodium (Na).

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