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12 grade chemistry others

How will you convert?Aniline to Chlorobenzene.

Aniket Singh

1 Year agoGrade

1 Answer

Askiitians Tutor Team

1 Year ago

Converting aniline to chlorobenzene involves replacing the amino (-NH2) group with a chlorine atom (-Cl) on the benzene ring. This reaction is known as electrophilic aromatic substitution. Here's a common method to achieve this conversion:

Reagents and Conditions:

Sulfonation: Treat aniline with concentrated sulfuric acid (H2SO4) at a low temperature (0-5°C) to form the anilinium ion. This step is also known as sulfonation.

Diazotization: Next, diazotize the anilinium ion by adding sodium nitrite (NaNO2) and hydrochloric acid (HCl) at a low temperature (0-5°C). This reaction replaces the amino group (-NH2) with a diazonium group (-N2+Cl-) on the benzene ring.

Sandmeyer Reaction: Finally, treat the diazonium salt with copper(I) chloride (CuCl) or cuprous chloride (CuCl) to replace the diazonium group with a chlorine atom. This reaction is known as the Sandmeyer reaction. Chlorobenzene is obtained as the product.

Here's the reaction sequence:

Aniline + H2SO4 ⟶ Anilinium ion
Anilinium ion + NaNO2 + HCl ⟶ Diazonium salt
Diazonium salt + CuCl ⟶ Chlorobenzene
Please note that these reactions should be conducted with appropriate safety precautions and under the guidance of a trained chemist, as they can involve hazardous chemicals and conditions.

is Pradeep Chemistry+Ncert sufficient for all of the theory of Jee Mains Chemistry?

Hi, I’m a self-study JEE 2027 aspirant with a large 11th backlog. Since I don’t think 6–8 hour one-shots are sufficient to cover the full theory + breadth of problem types of a JEE chapter, I’ve shifted from lecture-based preparation to book-based self-study.

I have a problem with using NCERT as my primary chemistry source. In my experience, it is concise and information-heavy, but often lacks detailed explanations, systematic organisation of concepts, and categorisation of problem types. This seems especially problematic for Physical and Organic Chemistry, where I feel that simply reading NCERT may not give enough depth or problem-solving preparation.

So I’m considering this approach:

Pradeep Chemistry → complete the chapter thoroughly from Pradeep → then read NCERT for that chapter → solve JEE Main PYQs/problems.

My main question is:

Is Pradeep + NCERT sufficient as the complete theory source for JEE Main-level Chemistry?

In other words, after thoroughly completing a chapter from Pradeep and then NCERT, can I consider the theory part of that chapter complete for JEE Main, with only PYQs/problem practice remaining?

I’m asking specifically about JEE Main level, not Advanced.

Also, if Pradeep is not sufficient, what specific gap does it leave, and what would you recommend as a better book-based alternative for self-study?

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