In the reaction
`CH_(3)CN+2H underset("Ether")overset(HCl)(rarr) X overset("Boiling "H_(2)O)(rarr) Y`,
the term Y is

Options

A. Acetaldehyde
B. Ethanamine
C. Acetone
D. Dimethylamine

Answer

To solve the problem, we will analyze the given reaction step by step.

### Step 1: Identify the starting material
The starting material is **CH₃CN**, which is propionitrile (an alkyl cyanide).

### Step 2: Understand the reaction conditions
The reaction is carried out in the presence of **HCl** and **ether**. This suggests that we are likely performing a reaction that involves the conversion of the nitrile (CH₃CN) into an amine or an aldehyde.

### Step 3: Recognize the type of reaction
The reaction described is a **Stiffens reaction**, which is a method to synthesize aldehydes from alkyl cyanides.

### Step 4: Write the intermediate product
When CH₃CN reacts with HCl in the presence of ether, it forms an intermediate product, which is **CH₃CH=NH·HCl**. This is an imine (or a similar compound) that is formed during the reaction.

### Step 5: React the intermediate with boiling water
The next step involves treating the intermediate with **boiling water (H₂O)**. This hydrolysis step will convert the imine into an aldehyde.

### Step 6: Identify the final product
The hydrolysis of the intermediate will yield **acetaldehyde (CH₃CHO)** and **NH₄Cl** as byproducts.

### Conclusion
Thus, the term **Y** in the reaction is **acetaldehyde (CH₃CHO)**.

### Final Answer
The term Y is **acetaldehyde (CH₃CHO)**.

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