Alkali metals are obtained by the electrolysis of the molten salts and not by the electrolysis of their aqueous solutions. Give reason.

Explanation

To understand why alkali metals are obtained by the electrolysis of molten salts rather than their aqueous solutions, we can break down the explanation into several key steps:

### Step-by-Step Solution:

1. **Understanding Electrolysis**: Electrolysis is a process where electrical energy is used to drive a non-spontaneous chemical reaction. In the case of alkali metals, we are interested in the electrolysis of their salts.

2. **Electrolysis of Aqueous Solutions**: When we consider the electrolysis of an aqueous solution of an alkali metal salt, such as sodium chloride (NaCl), we have both the salt ions (Na⁺ and Cl⁻) and water molecules (H₂O) present in the solution.

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