Question

Number of compounds which give reaction with Hinsberg's reagent is_______.

Answer 1

Correct Answer: 5

To determine the number of compounds that react with Hinsberg's reagent, we must identify those containing primary or secondary amines. Hinsberg's reagent (benzenesulfonyl chloride) reacts as follows:

• Primary amines yield sulfonamides, which are soluble in alkali.
• Secondary amines yield sulfonamides, which are insoluble in alkali.
• Tertiary amines do not react with Hinsberg’s reagent.

Let's analyze the provided compounds:

1. Benzenediazonium chloride: This is not an amine.
2. Amide (RCONH2): Contains an amide group; it is not reactive.
3. Aniline (C6H5NH2): A primary amine; it is reactive.
4. Pyridine: A tertiary amine; it is not reactive.
5. Piperidine: A secondary amine; it is reactive.
6. Morpholine: A secondary amine; it is reactive.
7. Methylamine (CH3NH2): A primary amine; it is reactive.
8. Ethylenediamine: A primary amine; it is reactive.
9. Urea: Contains an amide group; it is not reactive.

The reactive compounds are:

1. Aniline
2. Piperidine
3. Morpholine
4. Methylamine
5. Ethylenediamine

This totals five compounds, which is consistent with the specified range of 5,5.

Therefore, the number of compounds that react with Hinsberg's reagent is: 5