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Aniline reacts with Br(2) water, NaNO(2)...

Aniline reacts with `Br_(2)` water, `NaNO_(2)//HCL` gives respectively :

A

p-Bromo aniline, p-chloro aniline

B

2, 4, 6 tri bromo aniline, p-chloro aniline

C

2, 4, 6 tri bromo aniline, Benzene diazonium chloride

D

p-bromo, aniline, Benzene diazonium chloride

Text Solution

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The correct Answer is:
To solve the problem of what products are formed when aniline reacts with Br₂ water and NaNO₂/HCl, we can break it down into two steps: ### Step 1: Reaction of Aniline with Br₂ Water Aniline (C₆H₅NH₂) reacts with bromine water (Br₂ in water) through an electrophilic substitution reaction. The amino group (-NH₂) is an activating group and directs the incoming bromine to the ortho and para positions of the benzene ring. 1. **Identify the structure of aniline**: - Aniline has a benzene ring with an amino group attached to it. 2. **Electrophilic substitution**: - When Br₂ water is added to aniline, bromine atoms will substitute hydrogen atoms at the ortho and para positions. - This results in the formation of 2,4,6-tribromoaniline. ### Step 2: Reaction of 2,4,6-Tribromoaniline with NaNO₂/HCl Next, we consider the reaction of 2,4,6-tribromoaniline with sodium nitrite (NaNO₂) in the presence of hydrochloric acid (HCl). 1. **Formation of diazonium salt**: - Under these conditions (0 to 5 degrees Celsius), the amino group (-NH₂) of 2,4,6-tribromoaniline is converted into a diazonium salt. - The product formed is benzene diazonium chloride (C₆H₅N₂Cl). ### Final Products Thus, the overall reaction sequence gives us: - From aniline and Br₂ water: **2,4,6-Tribromoaniline** - From 2,4,6-Tribromoaniline and NaNO₂/HCl: **Benzene diazonium chloride** ### Conclusion The final answer is: - **2,4,6-Tribromoaniline and Benzene diazonium chloride**.
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