Master NCEA Level 3 Organic Chemistry Reaction Schemes. Prepare with multiple choice questions, complete with hints and detailed explanations. Ace your exam with our comprehensive tools!

Multiple Choice

Nitrobenzene subjected to catalytic hydrogenation over Pd/C yields which compound?

Catalytic hydrogenation with hydrogen and a Pd/C catalyst reduces the nitro group to an amine, while the benzene ring stays intact. The nitro group (NO2) is stepwise hydrogenated through intermediates like nitroso and hydroxylamine to form the amine, giving aniline as the main product. This setup isn’t adding anything like a methoxy group, so anisole isn’t formed, and nitrobenzene itself isn’t the product. Aniline oxide isn’t a typical product under these conditions.

Catalytic hydrogenation with hydrogen and a Pd/C catalyst reduces the nitro group to an amine, while the benzene ring stays intact. The nitro group (NO2) is stepwise hydrogenated through intermediates like nitroso and hydroxylamine to form the amine, giving aniline as the main product. This setup isn’t adding anything like a methoxy group, so anisole isn’t formed, and nitrobenzene itself isn’t the product. Aniline oxide isn’t a typical product under these conditions.