Acetamide any and ethy1 amine can distinguished by reacting with .

Options

A. aq. HCl and heat
B. aq. NaOH and heat
C. acidified `KMnO_(4)`
D. bromine water

Explanation

To distinguish between acetamide and ethylamine, we can use the following steps:

### Step 1: Identify the Compounds
- **Acetamide**: The structure is CH₃C(=O)NH₂, which is an amide.
- **Ethylamine**: The structure is C₂H₅NH₂, which is a primary amine.

### Step 2: Choose the Reagent
We will use **aqueous NaOH and heat** as our reagent to distinguish between the two compounds.

### Step 3: React Acetamide with Aqueous NaOH and Heat
- When acetamide (CH₃C(=O)NH₂) is treated with aqueous NaOH and heated, it undergoes hydrolysis.
- The reaction produces sodium acetate (CH₃COONa) and ammonia gas (NH₃):
\[ \text{CH}_3\text{C(=O)NH}_2 + \text{H}_2\text{O} + \text{NaOH} \rightarrow \text{CH}_3\text{COONa} + \text{NH}_3(g) \]
- The release of ammonia gas is a significant indicator.

### Step 4: React Ethylamine with Aqueous NaOH and Heat
- When ethylamine (C₂H₅NH₂) is treated with aqueous NaOH and heated, there is no significant reaction:
\[ \text{C}_2\text{H}_5\text{NH}_2 + \text{NaOH} + \text{H}_2\text{O} \rightarrow \text{No Reaction} \]
- Ethylamine does not produce any identifiable product or gas.

### Step 5: Conclusion
- The reaction of acetamide produces ammonia gas, which can be detected, while ethylamine does not react under the same conditions.
- Therefore, we can conclude that acetamide and ethylamine can be distinguished by reacting with aqueous NaOH and heat.

### Final Answer
The correct option to distinguish between acetamide and ethylamine is **aqueous NaOH and heat**.

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