Write the names of reagents and equations for the preparation of following ethers by Williamson's synthesis:
i. 1-Propoxypropane
ii. Ethoxybenzene
iii. 2-Methoxy-2-methylpropane
iv. 1-Methoxyethane

Explanation

To prepare the ethers mentioned in the question using Williamson's synthesis, we will follow a systematic approach for each ether. Williamson's synthesis involves the reaction of an alkoxide ion with a primary alkyl halide to form an ether.

### Step-by-Step Solution:

#### i. Preparation of 1-Propoxypropane
1. **Identify the structure**: 1-Propoxypropane is an ether with the structure CH3-CH2-CH2-O-CH2-CH3.
2. **Reagents needed**: We need to generate the alkoxide ion and the alkyl halide.
- Alkoxide: Propoxide ion (C3H7O⁻) can be formed from sodium metal and propanol.
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