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Question

Chemistry Question on Chemical Reactions

The products A and B formed in the following reaction scheme are respectively
Product formation

A

B

Fig 2

C

D

Answer

Fig 2

Explanation

Solution

To analyze the reaction sequence, we need to look at the transformations taking place in each step.

First Reaction (A): The reaction of benzene C6H6 with concentrated nitric acid HNO3 and sulfuric acid H2SO4 leads to the nitration of benzene. The product formed is nitrobenzene:

A = C6H5NO2 (Nitrobenzene).

Second Reaction (B): The nitrobenzene then undergoes reduction with tin Sn in hydrochloric acid HCl, which reduces the nitro group to an amino group. The product formed is aniline:

B = C6H5NH2 (Aniline).

Thus, the correct identification of products A and B leads to: A = C6H5NO2, B = C6H5NH2.