Question

Incarbilamine test for primary amines the resulting foul smelling product is

• A. \(\text{CH}_3\text{NC}\)
• B. \(\text{CH}_3\text{NCl}_2\)
• C. \(\text{COCl}_2\)
• D. \(\text{CH}_3\text{CN}\)

Answer 1

The Correct Option is A

The carbylamine reaction, also known as the isocyanide test, is a chemical test used for the detection of primary amines. In this reaction, a primary amine reacts with chloroform in the presence of a base (typically potassium hydroxide) to form an isocyanide.

The resulting foul-smelling product formed in the carbylamine test is an:

Isocyanide (also known as a carbylamine)

Therefore, among the options provided, the correct representation of the product would be:

\(CH_3NC\)

It is important to note that isocyanides are highly toxic compounds with an intensely unpleasant odor, which is why the carbylamine test is easily recognizable. Thus, the foul smelling product is: Option 1

Answer 2

Carbylamine Test Result: 

The Carbylamine test is used to identify primary amines. When a primary amine reacts with chloroform (\(\text{CHCl}_3\)) and alcoholic potassium hydroxide (\(\text{KOH}\)), it produces an isocyanide (also called isonitrile), which has a foul smell.

For methylamine (\(\text{CH}_3\text{NH}_2\)), the product is:

\[ \text{CH}_3\text{NH}_2 + \text{CHCl}_3 + 3\text{KOH} \rightarrow \text{CH}_3\text{NC} + 3\text{KCl} + 3\text{H}_2\text{O} \]

Hence, the foul-smelling product is: \(\text{CH}_3\text{NC}\)

Correct answer: (A) \(\text{CH}_3\text{NC}\)