How can the following conversions be brought about :
Diethyl ether to ethanol

Explanation

To convert diethyl ether (C2H5)2O to ethanol (C2H5OH), we can follow these steps:

### Step 1: React Diethyl Ether with Hydroiodic Acid (HI)
- Start by reacting diethyl ether with hydroiodic acid (HI). The reaction can be represented as:
\[ (C_2H_5)_2O + HI \rightarrow C_2H_5I + C_2H_5OH \]
- In this reaction, the ether undergoes cleavage. The oxygen in the ether has lone pairs that can attack the hydrogen in HI, leading to the formation of an alkyl iodide (C2H5I) and ethanol (C2H5OH).
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