`C_(2)H_(5)NH_(2) + HNO_(2) to` A, A is :

Options

A. `C_(2)H_(5)OH`
B. `C_(2)H_(5)NHOH`
C. `C_(2)H_(6)`
D. `C_(2)H_(5)NO_(2)`

Answer

To solve the question regarding the reaction of ethylamine (C₂H₅NH₂) with nitrous acid (HNO₂), we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are ethylamine (C₂H₅NH₂) and nitrous acid (HNO₂).

### Step 2: Understand the Reaction
When ethylamine reacts with nitrous acid, it forms an unstable compound known as ethyl diazonium salt (C₂H₅N₂⁺). This is a key intermediate in the reaction.

### Step 3: Formation of Ethyl Diazonium Salt
The reaction can be represented as:
\[ \text{C}_2\text{H}_5\text{NH}_2 + \text{HNO}_2 \rightarrow \text{C}_2\text{H}_5\text{N}_2^+ + \text{Cl}^- \]
Here, the ethyl diazonium salt is formed, which is unstable.

### Step 4: Decomposition of Ethyl Diazonium Salt
The ethyl diazonium salt is highly unstable and will decompose. The decomposition can be represented as:
\[ \text{C}_2\text{H}_5\text{N}_2^+ \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{N}_2 \uparrow \]
During this step, the diazonium salt decomposes to produce ethanol (C₂H₅OH) and nitrogen gas (N₂).

### Step 5: Identify the Final Product
The final product of the reaction is ethanol (C₂H₅OH). Therefore, the answer to the question is:
**A is ethanol (C₂H₅OH).**

### Summary of the Reaction
The overall reaction can be summarized as:
\[ \text{C}_2\text{H}_5\text{NH}_2 + \text{HNO}_2 \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{N}_2 \uparrow \]