This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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This reaction involves the reduction of a nitro group (-NO_2) to an amino group (-NH_2). This is a common method for synthesizing anilines from nitrobenzenes. Step 1: Identify the functional groups. The reactant is nitrobenzene, which has a nitro group (-NO_2) attached to a benzene ring. The product is aniline, which has an amino group (-NH_2) attached to a benzene ring. Step 2: Determine the type of reaction. The conversion of a nitro group to an amino group is a reduction reaction. Step 3: Select an appropriate reducing agent. Several reducing agents can accomplish this transformation. Common methods include: Metal and acid: Using a metal like tin (Sn), iron (Fe), or zinc (Zn) in the presence of a strong acid (e.g., HCl). This typically forms the anilinium salt, which is then neutralized with a base (e.g., NaOH) to yield the free amine. Catalytic hydrogenation: Using hydrogen gas (H_2) with a metal catalyst such as palladium (Pd), platinum (Pt), or nickel (Ni). One of the most common reagents used for this conversion is tin and hydrochloric acid, followed by a base. The reagents for the conversion of nitrobenzene to aniline are: 1. Sn, HCl \\ 2. NaOH Alternatively, catalytic hydrogenation can be used: H_2, Pd/C