In the given reaction `CH_3-CH_2-Broverset("Moist"Ag_2O)rarr[X]` [X] will be

Options

A. Ethanol
B. Diethyl ether
C. Propane
D. Propyne

Answer

To solve the given reaction of ethyl bromide (CH₃-CH₂-Br) with moist Ag₂O, we will follow these steps:

### Step 1: Understanding the Reactants
We start with ethyl bromide (CH₃-CH₂-Br) and moist silver oxide (Ag₂O). The term "moist" indicates that water is present, which will lead to the formation of silver hydroxide (AgOH).

**Hint:** Identify the reactants and their states. Moist Ag₂O means it is in the presence of water.

### Step 2: Formation of Silver Hydroxide
When Ag₂O is mixed with water, it dissociates to form silver hydroxide:
\[ \text{Ag}_2\text{O} + \text{H}_2\text{O} \rightarrow 2 \text{AgOH} \]

**Hint:** Recognize that moist Ag₂O produces AgOH, which is crucial for the reaction.

### Step 3: Reaction of Ethyl Bromide with Silver Hydroxide
The ethyl bromide (CH₃-CH₂-Br) will react with silver hydroxide (AgOH). The bromine atom (Br) will leave as bromide ion (Br⁻), and a carbocation (ethyl cation, CH₃-CH₂⁺) will be formed:
\[ \text{CH}_3\text{CH}_2\text{Br} + \text{AgOH} \rightarrow \text{CH}_3\text{CH}_2^+ + \text{Ag}^+ + \text{Br}^- \]

**Hint:** Understand the mechanism of the reaction where the leaving group (Br) forms a carbocation.

### Step 4: Nucleophilic Attack by Hydroxide Ion
The hydroxide ion (OH⁻) from the dissociation of AgOH will then attack the ethyl cation (CH₃-CH₂⁺) to form ethanol (CH₃-CH₂OH):
\[ \text{CH}_3\text{CH}_2^+ + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{OH} \]

**Hint:** Recognize that the nucleophile (OH⁻) attacks the electrophile (ethyl cation) to form the alcohol.

### Step 5: Formation of Products
The overall reaction produces ethanol (CH₃-CH₂OH) and silver bromide (AgBr) as by-products:
\[ \text{CH}_3\text{CH}_2\text{Br} + \text{AgOH} \rightarrow \text{CH}_3\text{CH}_2\text{OH} + \text{AgBr} \]

**Hint:** Identify the final products of the reaction, which include the desired alcohol and a salt.

### Conclusion
The product [X] formed from the reaction of ethyl bromide with moist Ag₂O is ethanol (CH₃-CH₂OH).

**Final Answer:** Ethanol (CH₃-CH₂OH)